How do I get my 9mo to sleep through night again? I don't know what happened. He used to sleep from about 9:30 until 5:30 and then he'd go back to sleep until 8. Now it's like he's up ever hour or so. I'm exhausted. My arms, my back, and my shoulders are sore and stiff all the time from holding him. He's taking up our bed because he will NOT fall asleep in his own and when I move him he just wakes up an hour later wanting to be next to me (and the boobies 🙄). I love my baby but I need to sleep. ANY advice is appreciated.