Unfortunately you’re not going to make him understand. He’s showing you how he is. It would be best to cut contact with him unless absolutely necessary and put him on child support as soon as that baby is born
I’m afraid chances are nothing will change. Cut and run sooner the better! Sounds dramatic but this sort of attitude will never make you happy. If it gets messy, I would 100% start looking at legally applying for child support. Waste of space dads are far too common and allowed to get away with it.
No contact worked best for me I didn’t respond to anything until he mentioned getting her what she needed and coming to help but it depends on the type of man he is for the most part tho.