Take him to an ultrasound with you so he can see the baby moving and everything and see that its reals hes gunna be a daddy
Hi there. I'm really sorry to hear that he isn't acting excited about the baby. Is he not thrilled at the prospect of becoming a father? It's too late! right? But some men who are feel they weren't sure about becoming a dad will begin to drift off a bit. Or if he is unsure if he is excited or not, he may just act indifferent.
Have you talked to him about his feelings? I know YOU need support and want him there for you but good communication includes it going both ways. He knows you are happy and excited but have you talked to him regarding his feelings about it? It might be hard to hear if he isn't thrilled but at least you'd be on the same page and you both could offer each other support.
See what I'm saying?
I think you two need to talk honestly about how both of you feel. If he insists that he is excited, then spell out for him what would make you feel better. If he tells you that he isn't thrilled, ask him what you can do to help him through that.
I'm here to talk if you need it. peace and hugs