M.L.
I know that I have read that kids around 2 or 3 start waking up earlier because their minds are becoming more aware of time. It just happened to be that it came at the time change for both you and me! Which I guess is better than having them start it before and now feel like they are waking at 6am instead of 7. When my 4yo was younger, as soon as I got him to understand the snowman on the clock (the 8) and two zeros, I told him to stay in bed until he sees the snowman. It worked wonderfully until time change when my now 2 yo started getting up at 7, 715ish.... Now as soon as he starts learning about the snowman, I will hopefully have a few more years until the new one gets to that age! :)