I feel like i'm doing something wrong!!! My dd is 13 months old and for the last month or so has been waking in the night between 1-4am. She will be up for up to 2 or 3 hours and seems to find it really difficult to get back to sleep. She isn't particularly unhappy but the only way she will go back off is if she has some milk. She used to be such a good sleeper and she goes down at 7pm completely happy. Why is she doing this now?? Any ideas anyone? She has all 8 front teeth but so far has no back ones. Teething was bad with all of these but this seems different.