Help! I'm exhausted... my little boy slept 7-7 from 11 weeks. I had him in a great routine and everything seemed to be going well but at 4.5 months he started waking at 3 and won't go back to sleep until 5! I have the occasional night off but it's so tiring. It's been going on for two weeks and he's nearly five months old. Just wondered when it will end? I also have a three year old and five year old and I need my sleep!