My 2 1/2 year old used to go to bed at 8pm, but now he's awake till 9:30pm, we spend the whole evening taking him back to bed and he seems to be wide awake. He usually goes to sleep for just over an hour at 12pm and if I try to cut this nap out he crashes out in his bed at 5pm. He seems to need an afternoon nap, but then he is not tired at bedtime. Any suggestions please?