Would it be wrong to change baby’s name

So I’m almost 7 months along, and my babys dad and I haven’t been together and haven’t gotten along this entire time. We chose a name for our baby but a little while ago he told me he was “done” and he’s “ending it”. Whatever that means, we haven’t been together, so.. idk. Anyways, the name we chose was an “us” thing, would it be wrong if I changed it to something I want, since he’s “done”?

*UPDATE*

I’m changing the baby’s name.

I brought it up to the father, and he was furious. I felt like if I didn’t say something before hand, it would make for an even worse situation. But we argued for a couple hours last night. It started out that he hated the new name and went into him getting high and drunk. 🤷‍♀️