My 2 year old son has gone from sleeping through the night to waking up at 4 or 5 o'clock raring to go! We have tried going into him and telling him its too early but he is able to scream and shout for 2+ hours and by that time its time to get up anyway. Not sure if he's becoming afraid of the dark or if he is just bored in his cot and wants to play. His naps in the day have been longer as a result and so this impacts on night time sleep! HELP!! Any suggestions? I am 12 weeks pregnant and so want to avoid bringing him into bed with us.