The baby year
Naps, the sleep changes, starting solids and growth, from 3 months to the first birthday. Just when you've worked it out, it changes. Here's what's next.
Tools
- Baby sleep schedule by ageToday's wake windows, naps and bedtime for your baby's age, and what changes next.
- Baby milestones checkerThe CDC's milestone checklists from 2 months to 2 years: tick what your child does, and know when to ask.
- Starting solids calendarA dated plan for first foods and allergens like peanut and egg, one new food every few days.
- Feeding calculatorHow much and how often by age and weight, for breast milk, formula or both.
- Baby percentile calculatorWeight, length and head percentiles on the WHO growth charts US pediatricians use.
- Breast milk storage calculatorWhen to use pumped milk by: counter, fridge, freezer or thawed, with a printable fridge chart.
Guides
- Starting solids and introducing allergens When to start solids (about 6 months, not before 4), signs your baby is ready, first foods, iron, gagging versus choking, and introducing peanut and other allergens.
- Sleep regressions: the 4-month change and the rest Which sleep regressions are real? The 4-month change is sleep maturing. 8 to 10 months has some evidence. 12 and 18 months are folk labels. What helps, and when to call.
- Baby percentiles, explained What your baby's weight and length percentile means, why US pediatricians use WHO charts under 2, the 2nd and 98th lines, and why the trend beats any single number.
- Well-baby visits: what happens at each checkup, birth to 2 A checklist for every checkup from the hospital to age 2: what the pediatrician does at each, the screenings, what to bring and the questions to ask.
- Baby vaccine schedule, explained (AAP and CDC, 2026) Every vaccine from birth to age 2 with its ages, where the AAP and CDC schedules differ in 2026, what insurance covers, and what to expect after shots.
Coming next
We add new guides every week. Here's the plan. Each one is fact-checked before it goes up.
Week of Nov 16
- Baby milestones by month, with a printable chart
- Car seat stages by age, with a printable chart
Week of Dec 28
- Teething