A one-week-old baby sleeps roughly 16 hours per day, spread across many short stretches throughout the day and night. There’s no single block of sleep at this age. Instead, your newborn will drift in and out of sleep in cycles that can feel unpredictable, and that’s completely normal.
Total Sleep at One Week Old
Most newborns sleep between 14 and 17 hours in a 24-hour period, with 16 hours being a common average. About half of that sleep is spent in a lighter, active sleep state (REM sleep), which is why you’ll notice your baby twitching, making faces, or fluttering their eyelids while asleep. This active sleep plays an important role in brain development during the first weeks of life.
No two babies are identical. Some one-week-olds will clock closer to 14 hours, others closer to 18. What matters more than hitting an exact number is whether your baby is feeding well, gaining weight, and alert during their brief awake periods.
Wake Windows and Sleep Stretches
At one week old, your baby can only handle being awake for about 30 to 90 minutes at a time. These “wake windows” are short because a newborn’s nervous system tires quickly. A typical awake stretch includes a feeding, a diaper change, and maybe a few minutes of eye contact before sleep cues kick in again.
Sleep stretches themselves are usually one to three hours long. You won’t see a long overnight block of sleep yet. Your baby’s stomach is tiny and empties quickly, so hunger pulls them awake at frequent intervals regardless of the time of day.
Why Day and Night Feel Reversed
One-week-old babies have no internal clock. The hormones that regulate sleep and wake cycles, melatonin and cortisol, don’t begin following a day-night rhythm until around 8 to 9 weeks of age. Until then, your newborn distributes sleep fairly evenly across day and night, which is why many parents find their baby wide awake at 2 a.m. and deeply asleep at noon.
This isn’t something you need to fix right now, but you can start laying the groundwork. Expose your baby to natural light and normal household sounds during the day. At night, keep the room dark and quiet during feedings and diaper changes. Over the coming weeks, these cues help the brain begin sorting day from night.
Sleep and Growth Spurts
There’s a direct connection between how much your newborn sleeps and how quickly they grow. Research from the American Academy of Sleep Medicine found that infants experience irregular bursts of increased sleep, sometimes adding an average of 4.5 extra hours of sleep per day for a couple of days at a time. Within 48 hours of those sleep bursts, measurable growth spurts in body length followed. Each additional hour of sleep increased the probability of a growth spurt by 20 percent.
Growth hormone is released after sleep onset and during deep sleep, which likely explains this link. So if your one-week-old suddenly seems to sleep even more than usual for a day or two, a growth spurt may be the reason.
When to Wake Your Baby for Feeding
Even though sleep is important, feeding takes priority in the first week or two. Most newborns lose weight in the days after birth and need one to two weeks to regain it. During this period, your baby needs 8 to 12 feedings per day, roughly one every two to three hours.
If your baby has been sleeping for more than four hours without eating, wake them for a feeding. This can feel counterintuitive when everyone tells you to “let the baby sleep,” but adequate nutrition is essential for weight recovery. Once your baby has regained their birth weight and is showing a steady pattern of weight gain, you can generally let them sleep until they wake on their own.
Reading Your Baby’s Sleep Cues
Because wake windows are so short, catching sleep cues early prevents your baby from becoming overtired, which paradoxically makes it harder for them to fall asleep. Signs your one-week-old is ready for sleep include staring blankly into the distance, yawning, jerky arm or leg movements, fussing, and sucking on their fingers. Losing interest in your face or voice is another reliable signal.
These cues can overlap with hunger signs, which adds confusion. Hunger tends to show up as sucking noises and rooting (turning toward the breast or bottle). If you’ve recently fed your baby and they’re showing the blank stare or jerky movements, sleep is the more likely need.
Normal Sleep vs. Signs of a Problem
Newborns sleep a lot, and deep sleep in a healthy baby is nothing to worry about. The key distinction is what happens during awake periods. A baby who is alert and active when awake, feeds well, and can be comforted when crying is doing fine, even if their sleep patterns seem excessive or erratic.
Lethargy looks different from healthy sleep. A lethargic baby is drowsy or sluggish even when awake, hard to rouse for feedings, and unresponsive to sounds or faces once they do wake up. A baby who sleeps continuously and shows little interest in eating may be ill and needs medical attention promptly.
Safe Sleep Setup
Because your one-week-old spends the vast majority of the day asleep, where and how they sleep matters enormously. The American Academy of Pediatrics recommends placing your baby on their back for every sleep, on a firm, flat mattress in a crib, bassinet, or portable play yard. The sleep surface should have only a fitted sheet: no blankets, pillows, stuffed animals, or bumpers.
Your baby should sleep in their own space, not on a couch, armchair, or in a swing or car seat (unless you’re actually driving). These surfaces increase the risk of suffocation. Room-sharing, where the baby sleeps in their own crib but in your room, is a safer alternative to bed-sharing and makes those frequent nighttime feedings easier to manage.