# Day 239: What eight months changed

> Lying to sitting, raking to passing, coos to syllables: what the last eight months built, and the 9-month visit next month with its screening questionnaire. Today's photo makes no claims.

- Series: Your eighth month, day by day (https://chorevia.com/learn/eighth-month), day 239 of 365, eight months
- Canonical URL: https://chorevia.com/learn/eighth-month/day-239
- Last reviewed: 2026-10-21
- Publisher: Chorevia (https://chorevia.com)
- Cite as: Chorevia. "Day 239: What eight months changed." Last reviewed October 21, 2026. https://chorevia.com/learn/eighth-month/day-239

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.

Eight months tomorrow. Today is for looking at how far the baby in front of you has come, without a checklist in hand.

## Heart

Sitting came in steps: first the tripod, leaning forward on the arms; by 6 to 8 months, many babies stay upright without their hands once you sit them up, with getting into a sit alone coming later ([AAP](https://www.healthychildren.org/English/ages-stages/baby/Pages/Movement-4-to-7-Months.aspx)). Both sitting without support and getting to a sitting position on their own are 9-month milestones ([CDC](https://www.cdc.gov/act-early/milestones/9-months.html)). The hands changed in the same way: early in this stage babies rake things in with the whole hand, and by its end most pinch with thumb and finger ([AAP](https://www.healthychildren.org/English/ages-stages/baby/Pages/Hand-and-Finger-Skills.aspx)). And the coos turned into syllables like "ba," "da," and "ma" ([AAP](https://www.healthychildren.org/English/ages-stages/baby/Pages/Language-Development-8-to-12-Months.aspx)). Eight months ago, none of that existed.

## Head

Next month holds the 9-month visit. The AAP recommends a standardized developmental screening at that visit ([Lipkin & Macias, 2020](https://pubmed.ncbi.nlm.nih.gov/31843861/); [AAP, 2025](https://downloads.aap.org/AAP/PDF/periodicity_schedule.pdf)), often a parent questionnaire like the Ages & Stages Questionnaires ([ASQ](https://agesandstages.com/about-asq/)), plus a full exam, questions about sleep and pulling to stand, and fluoride varnish once teeth are in ([AAP](https://www.healthychildren.org/English/ages-stages/Your-Childs-Checkups/Pages/Your-Checkup-Checklist-9-Months-Old.aspx)). The questionnaire is a conversation starter, not a verdict: CDC's milestones are skills at least 75% of babies show by each age ([Zubler et al., 2022](https://pubmed.ncbi.nlm.nih.gov/35132439/)), and a baby born early is measured by corrected age for the first 2 years ([AAP](https://www.healthychildren.org/English/ages-stages/baby/preemie/Pages/Corrected-Age-For-Preemies.aspx)).

## Body

What hasn't changed yet isn't a gap. Crawling isn't on any CDC checklist ([Kretch et al., 2022](https://pubmed.ncbi.nlm.nih.gov/35876833/)), and 4.3% of healthy children in the WHO's study never crawled on hands and knees at all ([WHO Multicentre Growth Reference Study Group, 2006](https://pubmed.ncbi.nlm.nih.gov/16817682/)). Taking a few steps alone and pointing to ask for things are 15-month milestones ([CDC](https://www.cdc.gov/act-early/milestones/15-months.html)). Today's photo is of a baby who sits, rakes, passes, and babbles; that's the whole caption.

## Try today

### Eight-month photo and letter

- **Time:** 10 minutes, baby fed and rested

1. Use the same spot as the seven-month photo if you took one: baby sitting on the rug, you within reach but not touching.
2. Take three: one sitting, one of the hands with whatever they're holding, one of the two of you.
3. Write five lines on paper: what they ate this week, the sound they make most, what they do when you leave the room, what you're tired of, what you'll miss.
4. No milestones in the letter. The list is for the pediatrician next month; the letter is for them.

**Make it work:** Date the paper and put it with the photos from months one and seven. The three together say more than any list.

## Watch for

- **Normal:** a sit that still ends in a slow lean onto one hand; getting into a sit alone comes after staying in one ([AAP](https://www.healthychildren.org/English/ages-stages/baby/Pages/Movement-4-to-7-Months.aspx)). **Bring it up with your pediatrician** if by 9 months your baby doesn't sit without support, look when you call their name, or babble lots of different sounds ([CDC](https://www.cdc.gov/act-early/milestones/9-months.html)).
- **Normal:** a baby who rakes a puff into a fist and can't get it out again; the pincer comes toward the end of this stage ([AAP](https://www.healthychildren.org/English/ages-stages/baby/Pages/Hand-and-Finger-Skills.aspx)). **Don't wait** if you're worried: ask about screening, or call your state's early intervention program for a free evaluation; you don't need a referral ([CDC](https://www.cdc.gov/act-early/families/concerned.html)).
- **Normal:** a quiet baby on a big day out, then a loud one at home. **Call your pediatrician right away** for a fever over 104°F (40°C), or if your baby looks or acts very sick ([AAP](https://www.healthychildren.org/English/tips-tools/symptom-checker/Pages/symptomviewer.aspx?symptom=Fever)).

## For you

The photo of you, sitting on the floor. Not the posed one; the one where you're cross-legged in yesterday's shirt with the baby against your shins, because that's where eight months of you happened. The 6-month visit was the last of the checkups at which the AAP recommends screening the birthing parent for depression ([Earls et al., 2019](https://pubmed.ncbi.nlm.nih.gov/30559120/)), so the honest look is yours now: if sadness has lasted more than two weeks, go to your own doctor and don't wait for a visit that isn't scheduled ([Office on Women's Health](https://womenshealth.gov/pregnancy/childbirth-and-beyond/recovering-birth)). Put your photo next to the baby's. Both belong in the record.

If you're the partner: take her picture on the floor today, and then let her take yours.

## Sources

- American Academy of Pediatrics. "Movement Milestones: Babies 4 to 7 Months." HealthyChildren.org, updated 2021. https://www.healthychildren.org/English/ages-stages/baby/Pages/Movement-4-to-7-Months.aspx
- 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
- American Academy of Pediatrics. "Hand and Finger Skills." HealthyChildren.org, updated 2009. https://www.healthychildren.org/English/ages-stages/baby/Pages/Hand-and-Finger-Skills.aspx
- American Academy of Pediatrics. "Language Development: 8 to 12 Months." HealthyChildren.org, updated 2009. https://www.healthychildren.org/English/ages-stages/baby/Pages/Language-Development-8-to-12-Months.aspx
- Lipkin PH, Macias MM; AAP Council on Children With Disabilities, Section on Developmental and Behavioral Pediatrics. "Promoting Optimal Development: Identifying Infants and Young Children With Developmental Disorders Through Developmental Surveillance and Screening." *Pediatrics*, 2020. https://pubmed.ncbi.nlm.nih.gov/31843861/
- American Academy of Pediatrics and Bright Futures. "Recommendations for Preventive Pediatric Health Care" (Periodicity Schedule). 2025. https://downloads.aap.org/AAP/PDF/periodicity_schedule.pdf
- Brookes Publishing. "About ASQ." Ages & Stages Questionnaires, accessed 2026. https://agesandstages.com/about-asq/
- American Academy of Pediatrics. "Checkup Checklist: 9 Months Old." HealthyChildren.org, updated 2021. https://www.healthychildren.org/English/ages-stages/Your-Childs-Checkups/Pages/Your-Checkup-Checklist-9-Months-Old.aspx
- Zubler JM, Wiggins LD, Macias MM, et al. "Evidence-Informed Milestones for Developmental Surveillance Tools." *Pediatrics*, 2022. https://pubmed.ncbi.nlm.nih.gov/35132439/
- American Academy of Pediatrics. "Corrected Age For Preemies." HealthyChildren.org, updated 2018. https://www.healthychildren.org/English/ages-stages/baby/preemie/Pages/Corrected-Age-For-Preemies.aspx
- Kretch KS, Willett SL, Hsu LY, et al. "'Learn the Signs. Act Early.': Updates and Implications for Physical Therapists." *Pediatric Physical Therapy*, 2022. https://pubmed.ncbi.nlm.nih.gov/35876833/
- WHO Multicentre Growth Reference Study Group. "WHO Motor Development Study: windows of achievement for six gross motor development milestones." *Acta Paediatrica Supplement*, 2006. https://pubmed.ncbi.nlm.nih.gov/16817682/
- Centers for Disease Control and Prevention. "Milestones by 15 Months." Learn the Signs. Act Early. program, accessed 2026. https://www.cdc.gov/act-early/milestones/15-months.html
- Centers for Disease Control and Prevention. "Concerned About Your Child's Development?" Updated 2026. https://www.cdc.gov/act-early/families/concerned.html
- 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
- Earls MF, Yogman MW, Mattson G, Rafferty J; AAP Committee on Psychosocial Aspects of Child and Family Health. "Incorporating Recognition and Management of Perinatal Depression Into Pediatric Practice." *Pediatrics*, 2019. https://pubmed.ncbi.nlm.nih.gov/30559120/
- Office on Women's Health. "Recovering from birth." US Department of Health and Human Services, 2021. https://womenshealth.gov/pregnancy/childbirth-and-beyond/recovering-birth