8-Month Sleep Regression
Medically reviewed by Dr. Sarah Chen, MD, FAAP · Board-Certified Pediatrician
Content reviewed against published AAP, AAP, NSF guidelines
Last reviewed:
Sleep concerns affect nearly every family at some point. When it comes to 8-month sleep regression, here is what the guidelines recommend.
The short answer
The 8-month sleep regression is usually driven by major developmental leaps in mobility, cognition, and attachment. Your baby is learning to sit, crawl, pull up, and is developing object permanence and separation anxiety. These exciting milestones can temporarily disrupt sleep, but most babies settle within 2-4 weeks.
Key takeaways
- The 8-month sleep regression is usually driven by major developmental leaps in mobility, cognition, and attachment. Your baby is learning to sit, crawl, pull up, and is developing object permanence and separation anxiety. These exciting milestones can temporarily disrupt sleep, but most babies settle within 2-4 weeks.
- Usually normal when: Your baby wakes frequently at night and wants to practice sitting, crawling, or standing in their crib
- Call your doctor if: Your baby has stopped breathing, is gasping for air, or has a blue or grey color around the lips
- Varies by age — see the age-by-age breakdown below
“To reduce the risk of sleep-related infant deaths, the AAP recommends that infants sleep on their backs, on a firm, flat surface, without any soft bedding.”
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What Parents Should Know
According to AAP, NSF guidelines, the 8-month sleep regression is usually driven by major developmental leaps in mobility, cognition, and attachment. Your baby is learning to sit, crawl, pull up, and is developing object permanence and separation anxiety. These exciting milestones can temporarily disrupt sleep, but most babies settle within 2-4 weeks. At 7-8 months, around this age, your baby is experiencing explosive growth in motor skills. Many babies are learning to sit independently, crawl, or pull themselves up to standing. At night, they may wake up and practice these skills in their crib, unable to settle back down easily. The cognitive effort of mastering these movements can make it harder to transition between sleep cycles. It is generally considered normal when your baby wakes frequently at night and wants to practice sitting, crawling, or standing in their crib. However, you should contact your pediatrician promptly if your baby has stopped breathing, is gasping for air, or has a blue or grey color around the lips.
Normal vs. Concerning
By Age
What to expect by age
7-8 months
Around this age, your baby is experiencing explosive growth in motor skills. Many babies are learning to sit independently, crawl, or pull themselves up to standing. At night, they may wake up and practice these skills in their crib, unable to settle back down easily. The cognitive effort of mastering these movements can make it harder to transition between sleep cycles.
8-9 months
Separation anxiety typically peaks during this window. Your baby now understands object permanence, meaning they know you exist even when you're not visible, which can cause distress when they wake at night and you're not there. They may wake more frequently seeking reassurance, resist bedtime, or cry when you leave the room. This is cognitively normal and actually a sign of secure attachment.
9-10 months
Most babies begin to adjust to their new skills and the intensity of separation anxiety often lessens slightly, though it may continue for several more months. You might notice your baby can now settle themselves after pulling up or rolling around in their crib. Consistent, calm responses to night wakings help your baby build confidence that you'll return.
10-12 months
If sleep difficulties persist, they may be related to schedule changes (many babies drop to 2 naps around 8-9 months), teething molars, or continued separation anxiety. Some babies also begin walking during this time, which can bring another brief sleep disruption. Generally, sleep consolidates well again by 12 months if the environment and routine remain consistent.
What to Tell Your Pediatrician
- Describe when you first noticed 8-month sleep regression and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if sleep regression lasts longer than 6 weeks with no signs of improvement.
- Mention if your baby seems excessively tired during the day, is cranky, or has stopped progressing with developmental milestones.
- Bring a list of any questions or observations you want to discuss at the appointment.
What Should You Do?
When to take action
- Your baby wakes frequently at night and wants to practice sitting, crawling, or standing in their crib
- Bedtime becomes a battle, with your baby crying when you leave the room
- Your baby who previously slept well suddenly starts waking 3-4 times per night
- Changes coincide with new motor milestones or increased clinginess during the day
- Your baby settles when you provide comfort but becomes upset again when you leave
- Sleep regression lasts longer than 6 weeks with no signs of improvement
- Your baby seems excessively tired during the day, is cranky, or has stopped progressing with developmental milestones
- Separation anxiety is so severe that your baby can't tolerate being put down at all, even when awake and playing
- You notice snoring, mouth breathing, or pauses in breathing during sleep
- Your baby has stopped breathing, is gasping for air, or has a blue or grey color around the lips
- Your baby is unresponsive, extremely lethargic, or difficult to wake
- Sleep disruption is accompanied by high fever, vomiting, or other signs of acute illness
What You Can Do at Home
- Keep track of when you notice 8-month sleep regression — noting the time of day, duration, and any triggers can help your pediatrician.
- Remember that your baby wakes frequently at night and wants to practice sitting, crawling, or standing in their crib — this is generally within the range of normal.
- At 7-8 months, focus on observation rather than intervention unless your pediatrician advises otherwise.
- Maintain a consistent bedtime routine. Keep the sleep environment cool, dark, and quiet.
- While monitoring at home, seek immediate care if your baby has stopped breathing, is gasping for air, or has a blue or grey color around the lips.
Related Resources
Milestone Checklists by Age
Track your baby's developmental milestones from birth to 5 years with age-specific checklists.
Baby Sleep Guide
Age-by-age sleep needs, schedules, and evidence-based sleep strategies.
Month-by-Month Development
Detailed monthly development guides from birth through 24 months.
When to Call the Doctor
General guide on when to call the pediatrician, visit urgent care, or go to the ER.
Frequently asked questions
Is 8-month sleep regression normal?
When should I call the doctor about 8-month sleep regression?
When is 8-month sleep regression normal?
What causes 8-month sleep regression?
What should I mention to my pediatrician about 8-month sleep regression?
Is 8-month sleep regression normal at 7-8 months?
Is 8-month sleep regression normal at 8-9 months?
Should I go to the ER for 8-month sleep regression?
Does 8-month sleep regression go away on its own?
References
Doctor Visit Checklist
Bring this checklist to your next pediatrician visit to discuss 8-Month Sleep Regression.
Things to mention
- Describe when you first noticed 8-month sleep regression and how it has changed over time.
- Note your baby's current age and which age-specific patterns you are seeing.
- Mention if sleep regression lasts longer than 6 weeks with no signs of improvement.
- Mention if your baby seems excessively tired during the day, is cranky, or has stopped progressing with developmental milestones.
- Bring a list of any questions or observations you want to discuss at the appointment.
Observations to share
- Sleep regression lasts longer than 6 weeks with no signs of improvement
- Your baby seems excessively tired during the day, is cranky, or has stopped progressing with developmental milestones
- Separation anxiety is so severe that your baby can't tolerate being put down at all, even when awake and playing
Urgent signs to report immediately
- Your baby has stopped breathing, is gasping for air, or has a blue or grey color around the lips
- Your baby is unresponsive, extremely lethargic, or difficult to wake
- Sleep disruption is accompanied by high fever, vomiting, or other signs of acute illness
My notes
From ismybabyalright.com — free, evidence-based baby health guides
All content follows our editorial policy and is reviewed against published clinical guidelines.
2,705 evidence-based guides6 authoritative medical sources5 medical advisory board members
Related Resources
Bottom line
Most cases of 8-month sleep regression are normal. Talk to your pediatrician if your baby has stopped breathing, is gasping for air, or has a blue or grey color around the lips.
Trust your instincts. If something feels wrong, reach out to your pediatrician. Worrying about your baby means you care — that is a good thing.
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Related Sleep Concerns
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The ideal awake time between naps (called a "wake window") increases as your baby grows. Newborns may only handle 45-90 minutes awake, while toddlers can manage 4-6 hours. Getting wake windows right is one of the most effective ways to improve nap quality, because both too-short and too-long wake times lead to poor sleep.
Is a Bath Before Bed Really Necessary?
A nightly bath is not medically necessary and some babies with sensitive skin do better with less frequent bathing. However, a warm bath can be a powerful sleep cue because the subsequent body temperature drop triggers melatonin production. If you include a bath, keep it calm and warm rather than stimulating.
How Long Should the Bedtime Routine Be?
An ideal bedtime routine for babies and toddlers is 20-30 minutes. Shorter routines may not give enough time to wind down, while routines longer than 45 minutes can become a stalling tactic. Consistency in the routine order matters more than exact length.
Is My Baby's Bedtime Too Early?
For most babies over 3 months, bedtime between 6:00-8:00 PM is appropriate. A bedtime that is too early can cause early morning wakings (before 6 AM) or long periods of wakefulness in the middle of the night. However, during nap transitions or on days when naps were short, an earlier-than-usual bedtime helps prevent overtiredness.
Is My Baby's Bedtime Too Late?
For babies over 3-4 months, consistently going to bed after 8:30-9:00 PM may result in overtiredness, which paradoxically makes it harder to fall asleep and stay asleep. Cortisol rises when babies are overtired, leading to more night wakings and early mornings. Moving bedtime earlier, even by 15-30 minutes, often improves overnight sleep quality.
Is It Dangerous for My Baby to Sleep in a Car Seat?
Babies should not be left to sleep in car seats outside of the car. Car seat-related deaths are most often caused by positional asphyxia, which occurs when a baby's head falls forward, compressing the airway. While car seats are essential and safe for travel, the AAP recommends transferring your sleeping baby to a firm, flat sleep surface as soon as you reach your destination. Never use a car seat as a substitute for a crib or bassinet.