Use your child’s adjusted age when tracking developmental milestones. The adjusted age is based on your baby’s original due date. If you have a 14-month-old, but you gave birth three months ...

say about 15-month-old milestones. Your 1-year-old still needs plenty of sleep: 11 to 14 hours, according to the American Academy of Sleep Medicine. That can be broken up into a continuous 10-hour ...