Z.A.
I nursed my son to sleep, then transitioned to a bottle... and then he went down for naps and bedtime either with a bottle or sippycup of warm milk until he was 4ish (our dentist was fine with that). He was a fast grower, he needed the nourishment (still occasionally wakes in the middle of the night to eat, at 7yo... he's also 4'10 & 65 lbs... probably will be between 6'4 and 6'6 as an adult), but I know some kids only eat for comfort.
Here were the things for US that went along with nap/sleep problems:
- Hunger
- Teeth (thank GOD for tylenol... my son never got cranky, he just wouldn't sleep, and THEN he'd get cranky)
- Overtired
- Dropping or needing to add a nap