I'm having the same problem with my daughter, but I'm not going to put her to bed any earlier. She gets her bath at 6:30 and goes to bed at 7pm, and it just wouldn't be possible to do it any earlier. She is now waking at 6:30 instead of 7:15. We went through this last year too, and she eventually adjusted to going back to sleeping until 7:15. Just stick with your regular routine, he'll eventually sleep later. It is very light in the mornings now, and that may be waking him up. Perhaps you could try a room darkening shade and see if that helps.