The 10-month sleep regression typically lasts two to six weeks. Most babies return to their normal sleep patterns once they adjust to the developmental changes driving the disruption. The wide range exists because every baby moves through physical and cognitive milestones at a different pace, and how you respond during this stretch can shorten or lengthen it.
What Causes the 10-Month Sleep Regression
Around 10 months, several developmental changes converge at once. Your baby is likely learning to pull to a stand, cruise along furniture, or refine their crawling. These new physical skills are exciting, and babies often want to practice them at the worst possible time: in the crib, in the dark, when they’re supposed to be sleeping.
Separation anxiety also peaks during this window. Between 6 and 12 months, babies develop a stronger understanding of object permanence, the concept that people and things still exist even when out of sight. The problem is that this understanding is incomplete. Your baby knows you exist when you leave the room but doesn’t fully grasp that you’re coming back. That combination creates genuine distress at bedtime and during nighttime wakings, which is why you may notice more crying when you leave the room or a new insistence on having you nearby to fall asleep.
Common Signs to Watch For
The 10-month sleep regression doesn’t look the same in every baby, but the pattern is recognizable. Common signs include:
- Waking more frequently during the night than usual
- Struggling to fall asleep at bedtime
- Refusing naps or taking noticeably shorter ones
- Waking early in the morning and refusing to go back to sleep
- Practicing new skills in the crib (babbling, pulling to stand, rocking on hands and knees)
- Crying when you leave the room at bedtime
During the day, your baby may also be crankier than usual. That irritability is a direct consequence of fragmented sleep, and it often reinforces the cycle: an overtired baby has an even harder time settling down.
Teething Probably Isn’t the Culprit
Many parents assume teething is behind nighttime wake-ups around this age, since new teeth are often emerging. But a longitudinal study using video sleep monitoring found no significant differences in total sleep time, nighttime awakenings, or the number of times parents needed to visit the crib between teething nights and non-teething nights. Teething may cause daytime fussiness, but if your baby’s sleep has fallen apart for days or weeks running, developmental changes are the more likely explanation.
How Much Sleep Your Baby Still Needs
Even during a regression, the target doesn’t change. Babies between 8 and 12 months need 12 to 16 hours of total sleep per day, including a stretch of 9 to 12 hours at night. Most 10-month-olds still take two naps, each lasting anywhere from 30 minutes to 2 hours. Wake windows at this age run about 2.5 to 3.5 hours between sleep periods.
If your baby seems exhausted by late afternoon, a brief third nap can bridge the gap to bedtime. But if they were already down to two solid naps before the regression started, that schedule is still appropriate.
Don’t Drop to One Nap Yet
When a baby suddenly starts fighting naps, it’s tempting to assume they’re ready for just one. At 10 months, they almost certainly are not. The transition from two naps to one typically happens between 13 and 18 months, and pushing it earlier often backfires. A baby who drops a nap too soon becomes overtired, which leads to worse nighttime sleep, not better. If your 10-month-old is refusing a nap, it’s more productive to adjust the timing slightly than to eliminate it.
What Actually Helps
You can’t fast-forward through a regression, but you can avoid habits that extend it.
Optimize the Sleep Environment
A dark, quiet room matters more now than it did a few months ago. Your baby is far more aware of their surroundings, and even small amounts of light or noise can keep their brain engaged. Blackout curtains and a white noise machine help signal that it’s time to sleep, not time to explore.
Prioritize Crib Sleep
If your baby has been napping regularly in a stroller or carrier, this is a good time to shift more naps into the crib. Motion sleep and on-the-go naps are lighter and less restorative, and during a regression, your baby needs the deepest sleep they can get.
Give New Skills Daytime Practice
A baby who’s learning to pull to a stand will try to do it in the crib at 2 a.m. if they haven’t had enough practice during the day. Offering plenty of time to work on new physical skills while they’re awake can reduce the urge to rehearse them at night. If your baby does stand up in the crib and can’t figure out how to get back down, calmly help them lie down without turning it into an extended interaction.
Stay Consistent With Bedtime
The biggest risk during a regression is introducing new sleep associations that outlast the regression itself. If your baby previously fell asleep independently and you start rocking or feeding them to sleep every night for three weeks, you may solve the regression but create a new dependency. It’s fine to offer extra comfort, a few minutes of patting, an extra check-in, but try to keep the core routine intact. The regression ends on its own. Habits you build during it may not.
Manage Wake Windows Carefully
With wake windows of 2.5 to 3.5 hours, timing naps correctly becomes more important when sleep is already fragmented. A baby who stays awake too long before a nap will be harder to settle. If your baby woke earlier than usual or had a short nap, you may need to move the next sleep period up rather than pushing through to the usual time.
When the Regression Drags On
Most regressions resolve within six weeks. If your baby’s sleep is still significantly disrupted beyond that point, something else may be going on. Ear infections, illness, or a schedule that no longer fits their needs can all mimic a regression. Persistent sleep disruption past the six-week mark is worth discussing with your pediatrician, especially if it’s accompanied by other symptoms like fever, ear pulling, or a sudden change in appetite.