There isn't one universal age at which every baby is ready, and this isn't a topic where a rounded-up rule
of thumb should carry more weight than it deserves.
Newborns are not appropriate candidates for the Ferber method. That regular night waking is normal in the
first several months of life, and young babies genuinely need night feeds for growth and development — this
isn't a habit to be "trained" away in early infancy.
On the research side: a randomised controlled trial published in Pediatrics studied graduated extinction and
bedtime fading in infants aged 6–16 months, finding significant sleep benefits with no adverse effects on
infant stress, parent-child attachment, or child emotional/behavioural outcomes at 12-month follow-up. That
gives a reasonable evidence-based lower bound for graduated extinction specifically — but it doesn't mean
every 6-month-old is automatically ready. Readiness still depends on:
What the Ferber Method Does Not Mean
Because this method is often mischaracterised, it's worth being explicit:
- It does not mean ignoring your baby indefinitely.
- It does not mean eliminating all night feeds.
- It does not mean leaving a sick or distressed baby to cry.
- It does not mean every baby needs the same interval schedule.
- It does not mean parents must use it — it's one option among several.
- It does not replace safe-sleep practices.
- It does not guarantee sleeping through the night for every baby, every time.
Ferber Method and Night Feeds
Sleep training and feeding decisions are two separate questions, and treating them as one is a common
source of confusion:
- Is my baby developmentally ready to reduce night feeds? This is a question for your GP, Well Child
Tamariki Ora provider, or a sleep consultant familiar with your baby's growth and feeding history —
not something a generic schedule can answer.
- Is my baby waking out of habit rather than hunger? This is what sleep training addresses.
A sound sleep plan clarifies which feeds are still age-appropriate to keep, rather than removing all
night feeds abruptly as a side effect of "training." If night feeds and night wakings feel tangled
together in your household, our article on the hidden link between night feeds and
night wakings covers this in more depth.
Ferber Method and Safe Sleep
Sleep training does not change New Zealand's safe-sleep requirements — they apply regardless of
which settling method a family uses.
Whānau Āwhina Plunket's guidance on making your baby's sleep space safe emphasises:
- Your baby sleeping on their own flat, firm sleep surface
- Sleeping on their back
- Keeping your baby's face clear of bedding, soft toys, and loose items
- Avoiding soft or unsafe sleep surfaces, and using layers of clothing rather than extra bedding
for warmth
Room-sharing vs. bed-sharing: Plunket guidance distinguishes between room-sharing (your baby sleeping
in their own separate sleep space in your room) and bed-sharing. If a family chooses to bed-share,
Plunket recommends the baby still has their own dedicated safe sleep space within the bed (such as a
wahakura or Pēpi-Pod) rather than sharing the adult mattress and bedding directly, and notes that
bed-sharing carries added risk in certain circumstances (for example, after smoking in pregnancy, or
if the baby was born early or small). Whichever setup your family uses, it sits independently of any
sleep training method — safe sleep always takes priority.
If any part of a sleep training plan seems to conflict with these basics, safe sleep comes first. For
full, current guidance, refer directly to Plunket.
What Should You Expect During the First Few Nights?
The first night can feel particularly challenging for some families, because the baby's usual
response pattern is changing and that adjustment can bring more protest crying than expected —
though this isn't universal, and some babies settle with far less fuss than parents anticipate.
Progress also isn't always a straight line. Some babies improve quickly; others need small
adjustments to timing, routine, or approach over several nights before a clearer pattern
emerges. Illness, travel, developmental leaps, and other disruptions can temporarily affect sleep
even after progress has been made — this doesn't mean the method has "failed." Our guide to sleep regression in babies covers
why these dips happen and how to navigate them without abandoning a plan that was otherwise working.
What If Ferber Isn't Working?
Stalled progress is rarely a sign the method has failed outright. More often, one of these is at
play:
-
Overtiredness — an overtired baby often fights sleep harder, not easier
-
Inconsistency — different responses from different caregivers (partners, grandparents, daycare)
can confuse the learning process
-
Wrong nap or bedtime window — sleep pressure is either too low or too high
-
Separation anxiety — this can become more noticeable during certain developmental stages and may
affect how a baby responds to check-ins
- An underlying cause worth ruling out — see our checklist on what to check when your baby won't
sleep, including teething and other physical
discomfort
- Method-fit mismatch — some babies and families respond better to a more gradual or
presence-based style
If you've been through a few false starts already, you're not alone — even sleep consultants have
been there; see one consultant's honest
journey through sleep training mistakes.
Common Problems Parents Ask About
Can You Use the Ferber Method for Naps?
The same principle can apply, but naps behave differently from night sleep — daytime sleep pressure is
lower, and short or resisted naps are common even in babies who settle well at bedtime. Many consultants
suggest establishing night settling first, then applying the same consistency to naps.
What About Early Morning Waking?
Early waking (for example, before 5:30am) is a different problem from settling at bedtime, and often relates
to overall sleep pressure, room darkness, or the previous day's naps rather than the settling method itself.
We cover this in detail in why your baby is
waking at 5am.
Can Ferber Help With Bedtime Resistance?
If your baby protests strongly at put-down rather than after you've left, this may point to overtiredness, a
bedtime that's too early or too late, or a routine that needs adjusting — not just "more consistency" with
check-ins.
What If Check-Ins Make My Baby More Upset?
Some babies become more distressed, not less, when a parent enters and leaves the room repeatedly. If this
happens consistently, it's worth reconsidering whether this particular method suits your baby and family,
rather than assuming the answer is simply to push through.
What If My Baby Vomits While Crying?
If your baby vomits while crying, stop and check on your baby rather than treating it as a normal part of the
sleep-training process. Comfort them, make sure they're breathing normally and otherwise well, clean up
calmly, and change bedding as needed. Seek medical advice — if vomiting is repeated, forceful, accompanied
by breathing difficulty, unusual lethargy, signs of dehydration, or any other symptom that concerns you.
Crying is not a reason to overlook a physical symptom.
Gentler Alternatives to the Ferber Method
You don't have to choose between "structured" and "responsive" as opposites. Options include:
- Longer, more gradual intervals than a standard schedule
- Camping out — sitting near the cot and slowly moving further away over several nights
- Pick-up-put-down — for younger or more sensitive babies
- Parental presence methods that reduce crying time while still building independent sleep skills
A personalised plan can account for factors that a generic schedule cannot, including your baby's age,
feeding pattern, temperament, and current sleep associations. If a fully gradual, low-crying approach is
more your family's style, our guide on gentle sleep training that actually
works and gentle ways to build
healthy sleep habits walks through those options in more detail — and if you'd rather avoid
rigid schedules altogether, see can you
improve baby sleep without strict schedules?
When to Speak to a Healthcare Professional
Sleep training should never override your baby's health and safety needs. Pause and speak with your
certified sleep consultant if:
- Your baby shows signs of illness, teething pain, or reflux
- There are feeding or growth concerns
- Your baby has breathing difficulties, congestion, or unusual crying patterns
- You notice signs of significant caregiver stress or exhaustion affecting your ability to respond
calmly
- Something simply doesn't feel right, or your baby's behaviour is unusual for them
If something feels off, pause the plan and seek advice rather than pushing through on schedule alone.
When Professional Sleep Support Can Help
Every baby, home, and family culture is different, which is why generic schedules often underdeliver.
Professional support can help when:
- You've tried several approaches without lasting improvement
- Consistency is difficult across partners, grandparents, or daycare
- You're not sure which method actually fits your baby
- You want a plan personalised to your baby's age, temperament, and feeding needs
- You need support adjusting a strategy that isn't working as expected
Curious what that actually looks like in practice? What a baby sleep consultant really does —
and when to hire one breaks down the process.
Need personalised support? Sleep and Wellness is a 100% online baby sleep consultancy, so support is
available for families across New Zealand and internationally, wherever you and your baby are. Explore our baby sleep consultation
services or get in touch to ask
a question first.
Frequently Asked Questions
The Ferber method is a graduated extinction sleep training approach where a baby is put down
awake and parents check in briefly at gradually increasing time intervals, rather than staying
in the room or leaving without any check-ins at all.
No. The Ferber method includes planned, brief parental check-ins at increasing intervals.
Traditional "cry it out" (full extinction) involves no check-ins after put-down. They're often
confused but are distinct approaches.
Newborns aren't suitable candidates, since regular night waking and night feeds are normal and
necessary in early infancy. Research on graduated extinction has studied infants from around 6
months, though individual readiness still depends on your baby's health, growth, and
development.
Research on behavioural sleep interventions, including graduated extinction, has not found
evidence of harm to attachment or child emotional/behavioural outcomes in the populations
studied — including a 2016 randomised controlled trial and a separate five-year follow-up study.
That said, this doesn't mean every approach is appropriate for every baby or family; health,
feeding, development, and safe-sleep considerations still matter, and individual assessment is
worthwhile.
Many families notice improvement within one to two weeks of consistent nightly use, though
timelines vary depending on the baby's age, temperament, and consistency across caregivers.
There's no single universal number — intervals are typically brief at first and lengthen
gradually. The point isn't to maximise crying time, but to give your baby a consistent chance to
settle between reassuring check-ins.
Keep it brief (generally under a minute), keep the room dark, use minimal touch such as a hand
on the back, and use a short, calm, repeated phrase rather than picking your baby up or starting
a routine like feeding.
This does happen with some babies. If it's a consistent pattern, it may mean this particular
method — or the check-in style — doesn't suit your baby right now, rather than simply needing
more consistency.
No. Sleep training and feeding decisions are separate. Whether to reduce night feeds should be
based on your baby's age, weight, and health — a discussion for your GP or Well Child provider —
not an automatic part of any settling method.
The same principle can apply, but naps often behave differently from night sleep due to lower
sleep pressure during the day. Many families establish night settling first before applying the
same approach to naps.
Common causes include overtiredness, inconsistency between caregivers, an unsuitable nap or
bedtime window, separation anxiety, or simply a mismatch between the method and your baby's
temperament — not necessarily a "failed" method.
Options include camping out, pick-up-put-down, longer graduated intervals, and other
parental-presence approaches that reduce crying time while still supporting independent sleep
skills.
About the Authors
K. Gayatri Pavani & K. Sree Bhanu Certified Pediatric Sleep Consultants & Child Sleep Specialists |
Sleep and Wellness
Gayatri Pavani and Sree Bhanu have been certified baby sleep consultants since 2021 and bring more than 10
years of combined experience supporting infants, toddlers, and families through gentle, evidence-informed
sleep coaching. Their work spans newborn settling — including the particularly fragile fourth-trimester period — night wakings,
bedtime resistance, sleep regressions, nap transitions, and early waking, with families across India, New
Zealand, and internationally. Together, they've supported 500+ families, guided by a philosophy that treats
current sleep science and a family's own instincts as complementary, not competing — never presenting any
single method, including the Ferber method, as the only path to better sleep. Read more about how Gayatri became a
pediatric sleep consultant and what she's learned from families along the way.
Speak With Our Child Sleep Specialists
This article is for general information and does not replace individual medical or clinical advice. Always
consult your health professional about your baby's specific health, feeding, and sleep needs.
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