My dd is 23 weeks and for about the past 6 weeks has started getting ratty about 5pm (sometimes earlier). The only thing that placates her is the bedtime routine (bath, bottle & bed by 6.15pm). She goes straight to sleep after and is now sleeping until about 2am for a feed - after this she wants to get up about 5.30 - 6am!! Is this a normal bedtime for this age? Is there anyway to delay it so she's not up so early in the morning? Grateful for some advice.