5 weeks puppy doesn’t let me sleep

Hey, I’ve adopt a puppy few days ago i thought he was 8 weeks old but found out he’s 5 weeks. I don’t know what to I don’t think is ok to leave him in cage this young and let him cry at night but he cry a lot and i find myself sleeping maybe 2 hour at night cuz he want my company and to play in the nights. Any advice what to do?