2 month old won't sleep alone

Cassandra

So my son is 2 months old today. Until a couple of weeks ago, he would sleep perfectly in his bassinet at night, and even some naps during the day. He would go 2-3 hour stretches at night in the bassinet and would go right back to sleep after being being nursed. Those stretches started to get shorter every couple of days, and now he won't stay in it. He will not sleep unless he's in my arms or on my chest. I have to sleep in a recliner every night with him, and it's taking it's toll on me with being so tired and sleeping in an uncomfortable position all night (I'm a side sleeper and can only be on my back in the chair). Any tips and tricks for getting him back to sleeping in his bassinet for good stretches of time? We've done swaddling and while he tolerates it for a little while with one arm out he eventually wants out. The bassinet even rocks and that will get him maybe an hour every once in a while but it's not consistent.