Your Baby at 12 Months: First Birthday, Milestones and What's Next
Your to-do list this month
- Go to the 12-month checkup and ask about switching to whole milk, moving from bottles to cups, and the first dental visit.
- Keep the car seat rear-facing. The first birthday isn't the cutoff; the seat's limits are.
- Plan a small, nap-friendly first birthday. Your baby will love the wrapping paper more than the gifts.
- Write a letter to your kid about their first year, and to yourself about yours.
"What do we want year two to look like, for the kid, for us, and for each of us?" Make one plan for each.
What your baby is doing
One year. According to the CDC, by their first birthday most babies:
- Play games with you, like pat-a-cake.
- Wave bye-bye, and call a parent “mama,” “dada,” or another special name.
- Understand “no” (pausing briefly or stopping when you say it).
- Put something in a container, and look for things they see you hide.
- Pull up to stand and walk while holding on to furniture.
- Drink from a cup without a lid as you hold it, and pick things up between thumb and pointer finger.
The AAP notes there’s a wide range of normal: some one-year-olds are walking confidently, others are still cruising. If something worries you, mention it at the 12-month checkup.
The 12-month checkup
Expect growth and development checks, a conversation about eating and sleep, and recommended vaccines. Good questions to bring:
- Milk: switching from formula to whole milk, and how much.
- Bottles: moving toward cups.
- Teeth: finding a dentist, if you haven’t had a first dental visit.
- Sleep: what’s typical in the second year as naps change.
Still rear-facing
The first birthday is a milestone for cake, not for car seats. The AAP recommends staying rear-facing until your child reaches the seat’s rear-facing limits, which for most kids is well past age 2.
Look how far you’ve come
A year ago you may not have known how to swaddle, warm a bottle, or tell a tired cry from a hungry one. Now you’re an expert in one specific small person. That’s worth celebrating as much as the birthday.
A few things worth doing this month:
- Write a letter to your kid about their first year, and one to yourself about yours.
- Check in with your partner about how you’re both doing, beyond logistics. Year one strains every couple. See keeping your relationship strong.
- Update the paperwork: life insurance, will and guardian, and the college savings plan if you have one. The money checklist covers it.
Then go eat cake. You earned it.
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Frequently asked questions
What are the 1-year milestones?
The CDC's 1-year milestones include playing games like pat-a-cake, waving bye-bye, calling a parent 'mama', 'dada' or another special name, understanding 'no', putting something in a container, looking for things they see you hide, pulling up to stand, walking while holding on to furniture, drinking from a cup without a lid as you hold it, and picking things up with thumb and pointer finger.
When should a baby switch to whole milk?
Most babies move from formula to whole cow's milk around 12 months unless their pediatrician recommends otherwise. Breastfeeding can continue alongside solid foods as long as parent and child want.
Sources
- Milestones by 1 Year, Centers for Disease Control and Prevention
- Developmental Milestones: 12 Months, American Academy of Pediatrics (HealthyChildren.org)
- Car Seats: Information for Families, AAP (HealthyChildren.org)
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