Yes, it’s normal for newborns to sleep most of the day. Healthy newborns typically sleep about 16 to 17 hours out of every 24, split roughly between 8 to 9 hours of daytime sleep and about 8 hours at night. That can look like a baby who does almost nothing but sleep, eat, and sleep again, which catches many new parents off guard.
The key distinction isn’t how much your baby sleeps but how they behave during the brief windows when they’re awake, and whether they’re waking often enough to eat.
How Much Sleep Is Typical
Newborns don’t follow a schedule. Their sleep comes in short stretches of roughly 2 to 4 hours at a time, broken up by feedings. Because those awake periods are so brief (sometimes just 30 to 45 minutes), it can genuinely feel like your baby sleeps “all day.” In the first few weeks, that perception is essentially correct.
Most babies won’t sleep longer stretches of 6 to 8 hours without waking until they’re at least 3 months old or weigh 12 to 13 pounds. Until then, the pattern of short sleep, brief wake, short sleep is completely normal and driven by their small stomachs and rapid growth.
Growth Spurts Can Mean Even More Sleep
If your baby suddenly seems to sleep even more than usual for a day or two, a growth spurt may be the reason. Research published through the American Academy of Sleep Medicine found that infants experience irregular bursts of sleep where their total daily sleep jumps by an average of 4.5 extra hours, along with about three additional naps per day, typically lasting around two days. These sleep bursts were significantly linked to measurable increases in body length, usually occurring within 48 hours.
Each additional hour of sleep during these periods increased the probability of a growth spurt by about 20 percent. So a baby who seems unusually sleepy for a couple of days and then snaps back to their normal pattern is likely just growing.
Feeding Still Needs to Happen
Even though all that sleep is normal, your baby still needs to eat frequently. Breastfed newborns typically need 8 to 12 feedings in 24 hours, which works out to roughly every 2 to 4 hours. Most babies will wake on their own to eat about every 3 hours, but not all of them will, especially in the first week or two.
If your baby is having trouble gaining weight, you shouldn’t let long gaps between feedings go unchecked. The American Academy of Pediatrics recommends waking your baby to feed if needed during this period. For premature babies or those with medical conditions, your pediatrician may set a specific feeding schedule. For most healthy, full-term newborns, following their hunger cues (called responsive feeding) works well once weight gain is on track.
How to Tell Feeding Is Going Well
Diaper counts are the simplest way to confirm your baby is getting enough to eat, even if they seem sleepy between feedings. The CDC provides a helpful baseline for breastfed babies during the first week:
- Day 1: at least 1 wet diaper, 1 soiled diaper
- Day 2: at least 2 wet, 3 soiled
- Day 3: at least 5 wet, 3 soiled
- Days 4 through 7: at least 6 wet, 3 soiled
If your baby is hitting these numbers, sleeping a lot but waking to eat, and gaining weight at checkups, the amount of sleep is not a concern.
Sleepy vs. Lethargic: The Important Difference
There’s a meaningful difference between a baby who sleeps a lot but is normal when awake and a baby who is genuinely lethargic. A healthy sleepy baby will wake for feedings (even if you have to nudge them), be alert and responsive during awake time, feed well, and can be comforted when crying. Small differences in activity level or fussiness from day to day are normal as long as those basics are in place.
A lethargic baby looks different. They’re difficult to wake even for feedings. When they do wake, they’re drowsy and sluggish rather than alert. They don’t respond normally to your face or voice, feed poorly, or feel limp when you pick them up. This is not the same as a baby who simply loves to sleep.
One specific condition to be aware of in the first two weeks is jaundice, which causes a yellowish tint to the skin and eyes. Mild jaundice is extremely common and usually harmless, but high bilirubin levels (the substance that causes the yellowing) can make babies unusually sleepy and hard to wake. Warning signs include a baby who seems listless, won’t latch or suck well, develops a high-pitched cry, arches their neck and body backward, or has a fever. These symptoms need prompt medical attention.
Signs That Warrant a Call
You don’t need to worry about your baby sleeping too much as long as they wake to eat, produce enough wet and dirty diapers, and seem like themselves during awake periods. The situations that call for a conversation with your pediatrician are more specific:
- Hard to rouse: You can’t wake your baby for feedings, or they fall back asleep immediately without eating.
- Poor feeding: They latch but won’t suck effectively, or they show no interest in eating.
- Fewer diapers than expected: Diaper counts falling below the minimums listed above, which can signal dehydration.
- Limp or unresponsive: The baby feels floppy when held or doesn’t react to being picked up.
- Yellow skin deepening: Jaundice that’s spreading or worsening rather than fading after the first few days.
Outside of these red flags, a newborn who sleeps 16 or 17 hours a day, and occasionally even more during a growth spurt, is doing exactly what newborns are built to do.