My sons father is a rude jerk... would I be wrong to change my mind and name our son by myself

Due December. 9 but my doctors have told me my son will definitely come early. Back in May I told my sons father he could name our son. We are not together but we are friends and try to focus on co parenting. I asked the other day if he came up with a name yet. Because our son could come any day now. He gets in his feeling and it’s a back and forth drama. He says I’m inpatient. The way he talks to me in these text messages pisses me off. I don’t know if it’s my hormones or what... but he piss me off and I was thinking about naming our son alone. Because in the text he clearly says “ the name I have chosen” ... I don’t understand him he keeps saying he does not have a name for months now and why he won’t tell me. Should I just name our son by myself???