My 20 month old son sleeps all night but does not want anything for breakfast in the morning? is that normal?

Maybe: As long as your child has been growing well, i would not be too alarmed. A lot of children at this age can be very picky eaters. Offer breakfast food, but do not force the child to eat, or punish for not eating.

Variety: Offer a variety of options at breakfast and a mid morning snack before lunch. Review his daily intake of calories at his next pediatric visit.