How to confront my bd???

So, he hasn’t seen my son nor provided since he was 6mo. He’s 15 months now and I just had a baby a week ago that’s potentially his also… I had sex with him and someone else around the same time but my baby came out having more of his features… I want to reach out and ask like is he gonna continue to be non-active in our sons life but idk how to come off…. I don’t really wanna go threw courts but need some advice