Help! Baby Sleeping only 2hrs tops (14 week old)

Bo

Any tips to break my baby’s habit of only sleeping 2 hours stretches at night and comfort nursing back to sleep? I’m aware I need to stop nursing him to sleep but i was fine with it to help build my supply and now he basically demands it.

There were a few odd nights where he’d sleep 4 or 5 hour stretches then wake every two hours for the rest is the night but that has stopped.

He does not take a paci I’ve tried 4 different types.

We are bed sharing.