I have two very early risers too, DS2 (who is almost 3) and DD (who will be 7 in April). The three of my kids are all in bed at 7pm, and DD and DS2 wake up at 5am. That is a sleep in from the 4am it was for a long time, until DLS started recently. DS1 is my best sleeper, and sleeps until about 6.30am.