Help please! Need advice!

Sorry this is gonna be a long post, thanks in advance to anyone who reads it all and leaves advice!

I’m currently pregnant with my second child, but with my first the father was not at all involved. This pregnancy had to be planned during an inconvenient time because of health risks, so I’m incredibly thankful to my SO for this baby.

Anyways. With my SO’s schedule change, we really haven’t been able to see each other to talk or even enjoy this pregnancy together. We also haven’t been able to really sit and discuss names together. He told me before finding out the gender that I could pick the girl name (already chosen as River). And we’re having a girl! So in my heart, my daughter was now river. Fast forward more than a month and my SO tells me he really does not like the name and that he discussed the name Lily with his friends. I wanted him to love her name (because of emotional issues with my son never having his biological father involved and wanting to make him happy). So I immediately agreed without giving it much thought. Later that day his mom makes a joke about how my daughter is being named after a dead cat they used to have, and I remember that one of my best friends dogs name is Lily. So I within the week bring up my concerns with my SO and he greats very irritated with me. So I decide to drop it and try to learn to love the name. Here we are a few weeks later and the name still hasn’t grown on me. So I attempt to bring it up again and he gets irritated with me again. Really, he refuses to really talk to me about it at all. I even attempted to suggest a compromise with the name Lilliana. I’m not sure what to do here. I’m feeling heart broken in such an odd way. How would you guys proceed?

I’ve included some screenshots. And I’ll be cross posting this into one more forum.

Thanks everyone!