Having kids now.. but have a boyfriend

I started dating someone recently so he is NOT ready for kids. Like for a loooong time. I have one daughter and if I want to have kids, it has to be now. He knows this and I don’t want to adopt, I want to carry all of my own children. Before him, I was looking into sperm banks and stuff and he doesn’t seem too interested. I know he’s not ready to be a father so I can’t ask him to be okay with this, but I don’t want to end it either. Any advice?