My 9 month old baby girl has always been a very good sleeper and was in a good routine at 8 weeks going to sleep at 7pm. She used to wake up just once during the night for a feed and the habit is still there. She goes to sleep by herself even after her 4am feed but just lately she can't seem to go straight back to sleep and although she mostly talks herself back to sleep after an hour or so she has now started to cry. She doesn't take much milk at this feed so have started to dilute milk. Anybody got a similar experience ??