Is it normal to nearly always have to wake up bub from her naps? She's almost 12 wks. I had her on 3 hr easy, then went to 3.5hrs a few weeks ago, but still had to wake her up. So now I"m trying 4 hours and STILL have to wake her! She's doing 1.5 - 1.75 hrs A time. She's really hard to get to sleep at night, so wondering if she's sleeping too much in the day.