Most of the time, you’ll wake a sleeping baby by undressing them, changing their diaper, or gently stimulating their skin. These simple techniques work because newborns are sensitive to temperature changes and physical touch, even during sleep. The reason you’d need to wake a baby at all is almost always feeding: newborns need to eat every two to three hours in the early weeks, and some will happily sleep right through a scheduled feed.
Why You’d Need to Wake a Baby
Newborns who are only getting formula typically need to eat every two to three hours in the first days of life, stretching to every three to four hours over the first few weeks. Breastfed babies follow a similar pattern. During this window, some babies sleep so soundly that they’ll miss feeds entirely, which can slow weight gain and, in breastfeeding mothers, reduce milk supply.
Jaundice is another common reason to wake a baby. Newborn jaundice makes babies unusually sleepy, sometimes to the point where they’re difficult to rouse for feeds at all. Frequent feeding (10 to 12 times a day) stimulates bowel movements, which is how a baby’s body clears the excess bilirubin causing the yellowing. Skipping feeds in a jaundiced baby lets bilirubin build up, so waking them on schedule matters more than usual.
Once your baby has regained their birth weight and is showing a steady pattern of weight gain, you can generally stop waking them for feeds and let them sleep until they’re hungry. Your pediatrician will tell you when that milestone has been reached, which for most babies happens within the first two weeks.
Read Your Baby’s Sleep Stage First
Babies cycle through distinct sleep stages, and timing your wake-up attempt to the right one makes everything easier. Newborn sleep starts with drowsiness, moves into light sleep, then progresses into deep and very deep sleep before cycling back toward lighter stages and eventually REM (the dreaming phase where you can see their eyes moving beneath closed lids).
During deep sleep (stages 3 and 4), a baby is completely still and quiet. This is the hardest time to wake them, and your efforts will mostly be frustrating. During light sleep, you’ll notice small movements, startles, or twitches in response to sounds. REM sleep looks similar, with fluttering eyelids and occasional facial expressions. These lighter stages are your window. If your baby is limp and motionless, wait five to ten minutes and try again when you see some movement.
Gentle Techniques That Work
Start with the least disruptive method and escalate if needed. Pick your baby up, talk to them, and move their arms and legs around. Tickling the bottom of their feet or rubbing their cheek can trigger the rooting reflex, which naturally pulls them toward wakefulness because their body associates it with feeding.
If that doesn’t work, undress them. Many newborns strongly dislike being undressed. The combination of physical handling and exposure to cooler air is often enough to get their eyes open. You don’t need to strip them completely. Removing a layer or unzipping a sleep sack may do it.
A diaper change is the next step up. Even if the diaper is clean, going through the motions of unfastening it, lifting their legs, and refastening adds enough stimulation to rouse most babies. The slight coolness of the air on bare skin helps too. (This is actually why parents doing middle-of-the-night changes use room-temperature wipes instead of cold ones: cold wipes are startling enough to fully wake a baby you’re trying to keep drowsy.)
A bath is the last resort. It works when nothing else does, but it’s the most disruptive, so save it for situations where your baby truly won’t wake with lighter methods.
Keeping a Sleepy Baby Awake During Feeding
Waking a baby is only half the challenge. Many newborns latch on or accept a bottle, take a few sips, and drift right back to sleep. A few strategies help keep them engaged long enough to get a full feed.
Skin-to-skin contact keeps babies in a mildly alert state. Holding your baby against your bare chest with just a diaper on gives them warmth and closeness while keeping them from getting so cozy they fall asleep immediately. If you’re breastfeeding, the cross-cradle hold gives you control of your baby’s head, which lets you gently reposition them if they start to drift off. You can also try switching breasts (or pausing with a bottle) partway through the feed. The movement and repositioning acts as a mini wake-up.
Gentle stroking along the jawline, blowing softly on their face, or rubbing their back between shoulder blades can buy you another few minutes of active feeding. Some parents also find that keeping the room slightly cool and well-lit discourages sleepiness.
Dream Feeding: Waking Without Fully Waking
Dream feeding is a technique where you feed a baby who is still mostly asleep, typically right before you go to bed yourself, with the goal of stretching their longest sleep stretch to overlap with yours. The original method, coined by baby sleep author Tracey Hogg, involves gently holding your sleeping baby in a feeding position and stroking their mouth to trigger the rooting reflex, then offering a breast or bottle. Many babies will latch and feed without ever fully waking up.
The term gets used loosely, though. Some parents use “dream feed” to mean deliberately waking the baby for one last feed before the parent’s bedtime. Either approach can work. The key distinction is that a true dream feed keeps the baby in a sleepy state throughout, which means less fussing and an easier return to deep sleep afterward. If your baby tends to wake fully and struggle to resettle, the gentler version is worth trying first.
A Note on Overtiredness
While waking a baby for necessary feeds is completely safe, it’s worth knowing that sleep deprivation in infants has real physiological effects. Research published in the journal Pediatrics found that even short-term sleep deprivation in healthy infants raised their arousal thresholds, meaning they needed louder or stronger stimuli to wake up afterward. Sleep-deprived infants also showed higher rates of brief airway obstruction during sleep.
This doesn’t mean waking your baby for a feed is dangerous. It means you should let your baby sleep when they don’t need to be awake. The goal is never to keep a baby up longer than necessary, just to make sure they’re eating often enough to gain weight and stay healthy. Once the feed is done, put them right back down.