Quick answer: Yes, for most newborns. Until your baby is back to their birth weight and gaining steadily, pediatricians advise waking them to feed every 2 to 3 hours, and not letting them sleep longer than about 4 to 5 hours at night. Once your baby is thriving and past birth weight, ask your pediatrician when longer sleep stretches are safe.
By Justin Gurinskas, Co-Founder, Quark Baby. Information reviewed against AAP and Health Canada infant-feeding guidance.
Medically reviewed by Dr. Collin Yang, MD (Pediatrics) — June 2, 2026. This article is for general information and is not medical advice — always consult your pediatrician.
Should you wake a newborn to feed?
Yes, in the early weeks you usually should. Newborns grow fast and have tiny stomachs, so they need to eat every 2 to 3 hours, around 8 to 12 times in 24 hours, including overnight. Most babies lose 5 to 10 percent of their body weight in the first days after birth, and frequent feeding helps them regain it. The American Academy of Pediatrics advises not letting a newborn sleep more than about 4 to 5 hours at a stretch until they are back to birth weight and gaining well.
It is completely understandable to want to leave a peaceful, sleeping baby alone, especially when waking them risks a fussy night. But in these first weeks, keeping up with feeds matters more than the lost sleep. Babies who are premature, jaundiced, or below birth weight should be woken more carefully and exactly as your pediatrician directs, because underfeeding can worsen jaundice or cause low blood sugar.
Should you feed on demand or wake the baby?
Do both in the newborn stage. Feed on demand whenever your baby shows hunger cues, and wake them if they sleep through a feeding window. Crying is a late sign of hunger, so watch for earlier cues like lip-smacking, rooting, hand-to-mouth movements, and stirring during sleep, and feed before the crying starts since crying burns energy.
The reason both matter early on is supply and digestion. Breast milk digests quickly and a newborn's stomach is only about the size of a ping-pong ball, so breastfed babies typically need to nurse every 2 to 3 hours. Formula digests more slowly, so a formula-fed baby may stretch to about 4 hours in the first month. Frequent feeding also signals your body to build milk supply, which works on demand and supply, so skipping feeds early can reduce how much you produce later. Once your baby is gaining steadily and past birth weight, you can lean more on feeding on demand, with your pediatrician's guidance on longer sleep stretches.
Do you wake a newborn to feed at night?
Yes, usually for the first couple of weeks. Pediatricians commonly recommend waking your baby for at least three feeds overnight on most nights during this period, and not letting them sleep past about 4 to 5 hours, until they have regained their birth weight.
When you rouse a sleeping baby, time it to active or REM sleep, when you see moving arms and legs, changing facial expressions, and fluttering eyelids; deep sleep is much harder to interrupt. Gentle techniques that work: unswaddle and, if needed, undress your baby; change the diaper while stroking their hands and the soles of their feet; hold them upright; dim overly bright lights; talk, sing, and make eye contact; and lay a cool (not cold) washcloth on the forehead. A change of room can also help a very sleepy baby wake enough to feed.
Should you wake a sleeping baby to feed for weight and milk supply?
Yes, especially in the first weeks, because adequate feeding protects weight gain and milk supply. Newborns must replace the weight they lose after birth, and underfeeding in the early days raises the risk of jaundice and low blood sugar. For breastfeeding parents, frequent feeding in the first days is what teaches your body to make enough milk, so feeding roughly every 3 hours around the clock is important. There is no such thing as over-nursing a newborn.
How long should a feed last? Let your baby empty one breast so they reach the richer, fattier hindmilk that supports growth, which some babies finish in 10 minutes and others take 20 minutes or more. If you bottle-feed, give the equivalent of one full feed for their age and stage. Babies often doze off mid-feed from the warmth and comfort; watch for the rhythmic suck-swallow-breathe pattern, and if they nod off, reposition them, jiggle the nipple, or dribble a little milk on their lips to get them sucking again.
Do I need to wake my newborn to feed, and what if they won't wake?
In the early weeks, yes. Some babies wake themselves on schedule; others sleep through and need rousing. Neither is automatically a problem. If your baby will not wake, try more vigorous nudges: sing and talk louder, fully undress them, or move to another room. If that fails, let them sleep another hour and try again.
If your baby misses more than two feedings in a row, or is not feeding at least 8 times in 24 hours, call your pediatrician. Often nothing is seriously wrong, but your doctor can help get feeding back on track and confirm weight gain is healthy. By around six weeks most babies and parents settle into a comfortable rhythm, though every baby is different: some nurse every two hours, others stretch to 3 or 4. The gaps naturally lengthen as your baby grows. Keep checking diapers, looking for stools through the day and 8 to 10 wet diapers, as a simple signal that feeding needs are being met.
Night feeds are easier when cleanup is fast and your baby stays comfortable. The BuubiBottle Mini is an easy-to-clean, anti-colic newborn bottle designed to reduce the air-swallowing that leads to gas and fussiness during those frequent 2 to 3 hour feeds.
Frequently asked questions
Do you wake a newborn to feed at night?
Yes, usually. In the first few weeks, most pediatricians recommend not letting a newborn sleep longer than about 4 to 5 hours at a stretch until they are back to birth weight and gaining well. Babies who are premature, jaundiced, or underweight may need to be woken more often. Once your baby is thriving and past birth weight, your pediatrician may say longer night stretches are fine.
How do I know if my baby is getting enough to eat?
Watch the diapers and the scale. Expect roughly 6 or more wet diapers and several stools a day after the first week, steady weight gain, and a baby who feeds 8 to 12 times in 24 hours. If you are worried about intake or weight gain, call your pediatrician rather than guessing.
Should I wake a sleeping baby to feed if breastfeeding?
In the early weeks, yes, frequent feeding both nourishes your baby and builds your milk supply, which works on demand and supply. Aim to feed about every 2 to 3 hours. As your supply is established and your baby is gaining well, your pediatrician can advise when longer sleep stretches are safe.
When can I stop waking my baby for feeds?
Generally once your baby has regained their birth weight and is gaining steadily, healthy full-term babies can be allowed to sleep longer without being woken, often around 3 to 4 weeks but it varies. Always confirm the timing with your pediatrician, especially for premature or small babies.
As feeds get bigger and your baby grows past the newborn stage, the larger-capacity BuubiBottle Max covers full feeds for their age and stage, so you are not refilling mid-feed when a sleepy baby finally latches on.
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