So my DS was sleeping through the night at about 12 weeks (I mean 7-10 hours at a time). Then he started crawling and pulling himself up about a month ago and was cutting 2 new teeth at the same time. It was pretty much a nightmare! To add to the upset he started waking up 1-3 times a night screaming his little head off. If we put him in bed with us he immediately goes back to sleep. If we pick him up and snuggle him he is wide awake. His crib is still in our room so we can't really just try to Ferberize him and let him figure out how to self soothe, cause then we all suffer.
I've read that when babies hit certain milestones they experience sleep regression and have to relearn to sslf-soothe and to sleep. Any tips on how to get him to go back to sleeping through the night?