Any advice ?

I’m almost 17 weeks pregnant and baby’s father and I haven’t spoken since I was about 4 weeks saying he was shocked, he didn’t want anymore kids at the moment and needed “some time” so I left it at that. I’ve been contemplating updating him on my pregnancy because I found out I’m having a boy and I really want him to know but I don’t want to overstep or make him feel pressured to have part in babies life. My mom is super persistent on taking him for child support but that’s something I don’t want because he said he doesn’t want the baby, so why I should I make him have any obligation to something he doesn’t want?