In the last 3 days DS has slept right through to 5:30 and is then up for the day. Normally he would wake somewhere between 12 and 4 am and come into our bed. It could be related to us moving his bedtime back to 7pm instead of 6 as he was becoming very difficult to get to sleep. But his bedtime has never made a diffence to his wake up time before.

Do you think he might be starting to wean himself or just growing up? It just seems very coincidental.
I know theres probably no simple answer to that, just thinking "aloud" really.