My DD seems to be in an insomniac phase. She has always been a good sleeper, and apart from the odd night she's generally asleep by 7.30. Until now. The past couple of weeks she's not been asleep until 9, 9.30 and even 9.45 last night. This has happened before, but never with such regularity. We've moved her bedtime back a bit but it doesn't seem to have worked. Can anyone suggest any solutions?