# Day 257: Night waking, month nine

> Separation anxiety usually gets stronger around 9 months and can bring back night waking. Reassure quietly, then leave; ask before cutting night feeds. The two-minute check.

- Series: Your ninth month, day by day (https://chorevia.com/learn/ninth-month), day 257 of 365, week 35
- Canonical URL: https://chorevia.com/learn/ninth-month/day-257
- Last reviewed: 2026-10-21
- Publisher: Chorevia (https://chorevia.com)
- Cite as: Chorevia. "Day 257: Night waking, month nine." Last reviewed October 21, 2026. https://chorevia.com/learn/ninth-month/day-257

This guide is general education that summarizes published research and guidance from groups like the American Academy of Pediatrics, the CDC, and the WHO. It isn’t medical advice, and every child develops on their own timeline. Your pediatrician knows your child; if something feels wrong, call them. In an emergency, call 911.

A baby who slept until morning last month is up at 1 a.m. this week, crying as if you'd left the country. You haven't. Today is why this is happening, and the shortest kind way through it.

## Heart

Babies 4 to 12 months need 12 to 16 hours of sleep a day, naps included ([CDC](https://www.cdc.gov/act-early/milestones/9-months.html); [WHO](https://www.who.int/news/item/24-04-2019-to-grow-up-healthy-children-need-to-sit-less-and-play-more)), usually 9 to 12 hours at night plus two naps ([Nemours KidsHealth](https://kidshealth.org/en/parents/sleep812m.html)). Separation anxiety usually gets stronger around 9 months ([Swanson, AAP](https://www.healthychildren.org/English/ages-stages/toddler/Pages/Soothing-Your-Childs-Separation-Anxiety.aspx)), and it can bring back night waking ([AAP](https://www.healthychildren.org/English/healthy-living/sleep/Pages/separation-anxiety-and-sleeping.aspx)). The 1 a.m. cry is your baby discovering that you exist when you're not in the room, and objecting. It's attachment, with bad timing.

## Head

The advice is short and hard to follow at 1 a.m. Reassure your baby quietly, then leave ([Nemours KidsHealth](https://kidshealth.org/en/parents/sleep812m.html)). Cuddling, feeding, or talking at every waking can prompt your baby to wake for that attention ([Nemours KidsHealth](https://kidshealth.org/en/parents/sleep812m.html)). When separation anxiety brings new night waking, reassure calmly and consistently ([AAP](https://www.healthychildren.org/English/healthy-living/sleep/Pages/separation-anxiety-and-sleeping.aspx)). The point isn't to ignore the cry. It's to answer it the same way every time, briefly, so the answer itself becomes something your baby can predict and relax into.

## Body

Keep the bedtime routine short and the same, like a bath, then stories or songs, and put your baby down drowsy but awake ([Nemours KidsHealth](https://kidshealth.org/en/parents/sleep812m.html)). On night feeds: many babies this age don't need to eat at night, but some still do, so ask your pediatrician before cutting them ([AAP](https://www.healthychildren.org/English/ages-stages/baby/sleep/Pages/Sleeping-Through-the-Night.aspx)). Most formula-fed babies no longer need a middle-of-the-night feeding after 2 to 4 months ([AAP](https://www.healthychildren.org/English/ages-stages/baby/formula-feeding/Pages/amount-and-schedule-of-formula-feedings.aspx)), but check with your pediatrician first if your baby isn't growing and gaining weight steadily ([AAP](https://www.healthychildren.org/English/ages-stages/baby/sleep/Pages/Sleeping-Through-the-Night.aspx)). Growth first, then the sleep plan.

## Try today

### The two-minute check

- **Time:** 2 minutes by the clock, at the next night waking
- **From the guide:** [Naps, nights, and night feeds](https://chorevia.com/learn/7-12-months#naps-nights-and-night-feeds)

1. When the cry starts, pause a moment and listen. If it's winding down on its own, stay out.
2. If it builds, go in with the lights low. Say one calm sentence, the same one every time: "I'm here. It's sleep time." Put a hand on their back ([Nemours KidsHealth](https://kidshealth.org/en/parents/sleep812m.html)).
3. Two minutes, then out, even if they're still grumbling. No feed, no play, no lifting unless something's wrong ([Nemours KidsHealth](https://kidshealth.org/en/parents/sleep812m.html)).
4. If it's hunger, a dirty diaper, or illness, meet it, then back to the sentence. The check is for the separation cry, not the sick one.

**Make it work:** The same sentence and the same two minutes, from both adults. Consistency is the whole method ([AAP](https://www.healthychildren.org/English/healthy-living/sleep/Pages/separation-anxiety-and-sleeping.aspx)).

## Watch for

- **Normal:** a new 1 a.m. waking in a baby who slept through last month, that settles with a hand and a sentence ([AAP](https://www.healthychildren.org/English/healthy-living/sleep/Pages/separation-anxiety-and-sleeping.aspx)). **Talk with your pediatrician** before dropping a night feed if your baby isn't growing and gaining weight steadily ([AAP](https://www.healthychildren.org/English/ages-stages/baby/sleep/Pages/Sleeping-Through-the-Night.aspx)).
- **Normal:** tears that stop within minutes of your leaving the room ([AAP](https://www.healthychildren.org/English/ages-stages/baby/Pages/Emotional-and-Social-Development-8-12-Months.aspx)). **Call your pediatrician right away** for a fever over 104°F (40°C), or shaking chills lasting more than 30 minutes ([AAP](https://www.healthychildren.org/English/tips-tools/symptom-checker/Pages/symptomviewer.aspx?symptom=Fever)).
- **Normal:** a snuffly wake with the first cold of the season. **Call your pediatrician right away** for trouble breathing that isn't severe; **call 911** if your baby is struggling for each breath or can barely cry ([AAP](https://www.healthychildren.org/English/tips-tools/symptom-checker/Pages/symptomviewer.aspx?symptom=Fever)).

## For you

The nights are a phase. Separation anxiety usually gets stronger around 9 months ([Swanson, AAP](https://www.healthychildren.org/English/ages-stages/toddler/Pages/Soothing-Your-Childs-Separation-Anxiety.aspx)) and peaks between 10 and 18 months ([AAP](https://www.healthychildren.org/English/ages-stages/baby/Pages/Emotional-and-Social-Development-8-12-Months.aspx)); it has a shape and an end. If the nights are breaking you rather than tiring you, that's a different thing and it has a number: call or text the National Maternal Mental Health Hotline at 1-833-TLC-MAMA (1-833-852-6262), or call or text 988; in an emergency, call 911 ([CDC](https://www.cdc.gov/reproductive-health/depression/index.html)).

If you're the partner: alternate the checks tonight, one each. Same sentence, same two minutes. The baby shouldn't be able to tell which of you came.

## Sources

- Centers for Disease Control and Prevention. "Milestones by 9 Months." Learn the Signs. Act Early. program, updated 2026. https://www.cdc.gov/act-early/milestones/9-months.html
- World Health Organization. "To grow up healthy, children need to sit less and play more." 2019. https://www.who.int/news/item/24-04-2019-to-grow-up-healthy-children-need-to-sit-less-and-play-more
- Nemours KidsHealth. "Baby Sleep: 8- to 12-Month-Olds." Reviewed 2025. https://kidshealth.org/en/parents/sleep812m.html
- Swanson WS. "How to Ease Your Child's Separation Anxiety." HealthyChildren.org, updated 2026. https://www.healthychildren.org/English/ages-stages/toddler/Pages/Soothing-Your-Childs-Separation-Anxiety.aspx
- American Academy of Pediatrics. "Separation Anxiety & Sleeping Trouble in Young Children." HealthyChildren.org, updated 2022. https://www.healthychildren.org/English/healthy-living/sleep/Pages/separation-anxiety-and-sleeping.aspx
- American Academy of Pediatrics. "Sleeping Through the Night." HealthyChildren.org, updated 2013. https://www.healthychildren.org/English/ages-stages/baby/sleep/Pages/Sleeping-Through-the-Night.aspx
- American Academy of Pediatrics. "Amount and Schedule of Baby Formula Feedings." HealthyChildren.org, updated 2022. https://www.healthychildren.org/English/ages-stages/baby/formula-feeding/Pages/amount-and-schedule-of-formula-feedings.aspx
- American Academy of Pediatrics. "Emotional and Social Development: 8 to 12 Months." HealthyChildren.org, updated 2009. https://www.healthychildren.org/English/ages-stages/baby/Pages/Emotional-and-Social-Development-8-12-Months.aspx
- American Academy of Pediatrics. "Fever" (symptom checker). HealthyChildren.org, accessed 2026. https://www.healthychildren.org/English/tips-tools/symptom-checker/Pages/symptomviewer.aspx?symptom=Fever
- Centers for Disease Control and Prevention. "Symptoms of Depression Among Women." 2024. https://www.cdc.gov/reproductive-health/depression/index.html