My 2 year old.. oh lord.

Has started this whole 'I want to go ni ni every 5 mins' he will Literally cry if he doesnt go to his crib and sleep for 20 minutes. Yes he gets enough sleep at night his bedtime is 730pm and he wakes up at 830am. He plays hard all day every day, sometimes with playmates... but it has me worried since hes been doing this for 2 whole weeks. I feel terrible lol.