For six weeks my four month old textbook baby had been going to bed at 7:30 pm, taking a dream feed at 11 pm and getting up at 7 am. The reason I say had is because on Friday night she woke up during her dream feed and took an hour and a half to go back to sleep. Last night she woke at 10:15 pm. I put her back to bed only to find her wide awake when I went in for the dream feed. This time it took me an hour to get her back. The good news is that she is still sleeping through until 7 am but needless to say it is exhausting. Particularly given that I have a demanding job that I need to be up at 6 am for. Does anyone know what is going on here and have any advice? Thanks in advance.