So my 2 week old has been a great sleeper since birth, but I'm just concerned she sleeps too much. I mean she sleeps all night(10 hours) wakes up for an hour and she's been napping for 6 hours. I change her and feed her every 4 hours and she doesn't wake up. DD1 slept great at night but was awake a lot during the day. DD2 sleeps all the time. Is this normal?