If your 2 year old is alternating between crying and shouting "I'm not sleepy" while you are trying to make dinner, then falls asleep sitting in YOUR dinner chair while your back is turned, its probably a good indication he's not getting enough sleep. Seriously, I TRIED to get him to go down for a nap. Just like I TRIED to make him go back to bed when he woke up at 5:10 this morning!! It is 5:30pm, and he is sound asleep. That was one tired child!