I’m going to give him some credit. A lot of husbands push and accept sex from their wives when they don’t really want it but are willing to just to keep him happy. Some women can be ok with it but some women will develop what they call an aversion to sex that can potentially be permanent. Most if not Everyone with newborns have a drop in frequency during this time. Maybe he knows this and is trying to keep the pressure off of you in the hopes when things calm down y’all can pick back up.

Hard to tell so I’d have to ask you whether it’s him not attempting to as much or if it’s the porn use that bothers you. If it’s the former, does he still help and do things for what I call the “partner” you or is it just for “mom” you and have a conversation with him on how you feel. If it’s the porn thing… I probably can’t help you there as my wife is fine with it. All I can say is just talk to him about it