what happened to my excellent sleeper???

Rachel
Since the time my son turned 1 month I would put him in his crib about a half hr after he fell asleep and he would sleep between 6 and 9 hrs. Now at almost 5 months I have to try at least 2 or 3 times before I can put him down without waking him up and then he's up ever 2 or 3 hrs. We really had a good thing going, I miss it 😢💤