I know it hard especially without that emotional support. Just be happy for you and your son. Just hold him kiss him know that you are everything to him. Shift your focus from his father to Just you and your son.
I have been through something similar and message me if you need to talk.
It's rough when you don't have emotional support from your partner - I've gone through the same thing. I feel stupid for having had a baby with him - even though I love my baby to bits. Today I started to make a mental list of things I was grateful for (my baby's health, his smile, the fact he's reaching his developmental milestones) - try to focus on those things. You can't control your bf or his attitude - maybe one day you won't be together (believe me I understand how scary the thought of raising a newborn is) - you can however control your reactions to him. Focus on the things you are grateful for. Hope that doesn't sound patronising - I'm just in a similar boat and trying to work my way through it xx
So sorry