In a baby's first year, parents need to show them love while preparing for lack of sleep. Babies will develop routines around feeding, changing, and bedtime. As babies grow older, they begin sleeping more at night and developing faster than expected. Introducing solid foods is important for nutrition and health, as is keeping regular doctor visits. Babies typically crawl before taking their first steps around their first birthday, having learned to eat, walk, and get their teeth by that point.