For the last month my 20 month old ds has started waking up an hour earlier so 6am as apposed the exceptable 7am! He had a cold so i cant complain as he wasnt well but now he is fine and it is driving me insane. He is always asleep by 7pm and has 1 1/2 hours nap so i know he gets enough sleep in 24 hours but he wakes grumpy so i know he hasnt woken up when he WANTED to. Have tried leaving him in bed but moans and whines and then crys till get him up. He doesnt wake in the night or anything and putting him to bed later makes it worse not better so not going to change bedtime. He has a black out blind so it isnt the sun or anything. Any ideas??