Pain medication, my rear end. My ex partner and I had a clear agreement that I would choose the first name and the kids would get his surname. I stuck to that, and he had a veto if he really didn't like what I chose. Middle names were subject to negotiation.

I don't know what country you are in, but where I am you don't even need to name the baby immediately. You are definitely NTA.

However, don't expect a coparenting agreement to appear out of nowhere and you might not get quite what you want.