My son has never been one to sleep late but in July when we went on holiday we started to put him to bed later and he slept till 7.10 most mornings. It was heaven as he had previously done 5.30ams. It went well for a while but now we are back to 5.30 5.45 etc. We have tried everything - blacked out room, leaving him to cry, he is now going to be at 8pm but still wakes so early. Is it a phase or is he just someone who likes to see the early morning?