Dd has in the last couple of months started sleeping for a looong time! She goes to bed between 7.30 and 8pm and sleeps until 9am, sometimes later! Sometimes it seems like if me or dp didn't wake her she would just sleep for ages and ages. She also has a nap in the afternoon, usually between 1 - 1.5 hours. Is this normal or do I need to start waking her earlier?