DD2 is 6 months old and until about a 3 weeks ago, I was waking her at 11 for a bottle of formula, and she was having a bowl of baby rice, and she was sleeping through til just gone 6. While we were away a couple of weeks ago, I was so tired I decided not to wake her and she still went through til 5.15/5.30 so I dropped the bottle. I have since increased baby rice to 2 helpings but in the last week she has not gone back to waking at 3.30/4 (and I mean wide awake!) I have tried to settle her back to sleep (doesn't take a dummy) but all that works is breast-feeding her. What could be causing her to wake? Should I go back to the bottle at 11pm? Getting rather tired as DD1 has been waking between 6/6,30 too. Any advice much appreciated x