Sorry you're stuck with someone who feels that way
Honestly it's his loss if he chooses to take that path. All you can do is keep the communication line open so you know you did your best to keep him involved.
I would ignore all comments that achieve nothing from him.
And quite frankly, if he's not going to be there he has no input over name choices.
You will be a wonderful mother to this baby
have you joined any groups with people in similar situations? I find talking to others who know where you are coming from a great help!