Most 8-month-olds need about 2 to 3 hours of total daytime sleep, spread across 2 to 3 naps. That typically means two longer naps of at least 60 minutes each, and possibly a shorter catnap of 30 to 45 minutes if your baby hasn’t fully dropped the third nap yet. Combined with 11 to 12 hours of nighttime sleep, an 8-month-old should be getting 12 to 16 total hours of sleep per day.
How Many Naps and How Long
At 8 months, most babies are either firmly on two naps or in the process of transitioning from three naps down to two. It’s completely normal to have some two-nap days and some three-nap days during this transition period. Consistency will come.
On a two-nap day, aim for each nap to last at least 60 minutes. Some babies will stretch to 90 minutes or longer, especially for the morning nap. On a three-nap day, the first two naps should still be around an hour, with the third nap being a shorter catnap of 30 to 45 minutes. The goal is roughly 3 hours of total daytime sleep across all naps combined.
Wake Windows Between Naps
The time your baby stays awake between naps matters just as much as the naps themselves. At this age, most babies can handle 2 to 3 hours of awake time between sleep periods. If your baby is solidly on two naps, those wake windows tend to stretch closer to 3 to 3.5 hours.
Getting these intervals right is one of the biggest factors in nap quality. Too little awake time and your baby won’t have built up enough sleep pressure to stay asleep. Too much and they become overtired, which paradoxically makes it harder to fall asleep and stay asleep. Watch for drowsy cues like yawning or eye rubbing, but balance those signals against the clock. A yawn 90 minutes after waking doesn’t necessarily mean nap time.
Signs Your Baby Is Dropping the Third Nap
The transition from three naps to two typically happens between 7 and 9 months, so your 8-month-old may be right in the thick of it. Signs that the third nap is on its way out include:
- Fighting or flat-out refusing the last nap of the day
- Taking shorter naps than usual across the board
- Waking earlier in the morning
- Long stretches of wakefulness in the middle of the night
One useful signal: if your baby is regularly getting less than 10 hours of nighttime sleep on a three-nap schedule, switching to two naps often helps lengthen the night stretch. To make two naps work, your baby needs to comfortably stay awake for about 3 to 3.5 hours at a time. If they can’t do that yet, keep offering the third nap on days they need it.
Why Naps Are Staying Short
Any nap under 45 to 50 minutes is considered a short nap. That 30-to-45-minute waking, sometimes called the “45-minute intruder,” happens when a baby completes one sleep cycle but can’t bridge into the next one. A nap of 50 minutes or longer means your baby successfully connected two sleep cycles.
Three things commonly cause short naps. First, wake window problems. If the interval before the nap was too short or too long, your baby may not have the right balance of sleepiness to sustain a full nap. Second, the sleep environment. Light leaking into the room or sudden noises can pull a baby out of sleep right at that vulnerable cycle transition. Third, sleep associations. Babies who are rocked, held, or fed to sleep often struggle to put themselves back to sleep between cycles, because the conditions that helped them fall asleep are no longer present when they briefly wake.
One important tip: if your baby takes a short nap, resist the urge to shorten the next wake window to compensate. A shorter wake window before the next nap often just sets up another short nap. Stick with the age-appropriate interval.
How to Help Your Baby Nap Longer
Start with the room. Make it as dark as possible by covering windows, blocking light from electronics, and closing doors. Use a sound machine to mask household noise. Keep the temperature cool and comfortable, and use a sleep sack instead of loose blankets.
Build a short, predictable nap routine of about 5 to 10 minutes. Do the same steps in the same order every time: diaper change, comfortable clothes, sleep sack, sound machine on, blinds down, a lullaby or short book. This sequence signals to your baby’s brain that sleep is coming.
Make sure daytime feedings are full and frequent. Breast milk or formula should still be the primary calorie source at 8 months, offered roughly every 2.5 to 3.5 hours. If your baby is hungry, they won’t nap well. Offering a feeding before a nap can help prevent an early wake-up.
If your baby wakes early from a nap and is fussing or grunting rather than fully crying, give them a few minutes to see if they resettle on their own. If the fussing escalates or continues beyond a few minutes, the nap is over. Move on and aim for an appropriate wake window before the next one.
The 8-Month Sleep Regression
Around 8 months, many babies go through a noticeable disruption in their sleep patterns. This often coincides with a burst of physical development. Crawling, pulling up to stand, sitting independently, and teething all tend to cluster around this age, and all of them can make a baby restless during sleep.
During a regression, you might notice your baby having trouble falling asleep, waking more at night, getting fussy around nap time, or shifting sleep toward longer daytime naps and shorter nighttime stretches. This is temporary. Circadian rhythms are still maturing throughout the first year, so some variability is biologically normal. Keeping your nap routine and wake windows consistent through a regression helps your baby find their rhythm again faster.
A Typical Two-Nap Day
Every baby’s schedule will look a little different depending on their morning wake time and individual sleep needs, but here’s a general framework for an 8-month-old on two naps. If your baby wakes around 7:00 a.m., the first nap would fall around 9:30 or 10:00 a.m. and last about an hour to 90 minutes. The second nap would start around 2:00 or 2:30 p.m. and last roughly the same. Bedtime would land somewhere between 7:00 and 8:00 p.m., about 3 to 3.5 hours after the second nap ends.
If your baby still needs a third nap on some days, keep it short (30 to 45 minutes) and make sure it ends early enough that bedtime isn’t pushed too late. Many families find the third nap naturally disappears as wake windows gradually stretch.