Partner sleeps in spare room when we fight ? We have a 2mnth old

Does anyone else’s partners sleep in the spare room when you fight ?

Usually I’d be ok with it but we have a 2 month old that’s up every 2-3 hours and I feel as though it’s not fair that he gets to drop his responsibilities as a father and gets to have a great night sleep in the spare room. God forbid if I ever did this ! And He doesn’t get up to help at all to help.

I’m so annoyed but don’t want to add to our fight . Am I overreacting ? Should I just let him sleep in there when we fight or is it ok to say that it’s unfair ?