Co-Parenting with Toxic Paternal Side

I’m 30 weeks pregnant with twins. My childrens father and I were together until I got to be about 24 weeks. I decided to leave him because his behavior changed towards me and I felt like he wasn’t trying to help make my pregnancy as peaceful and stress free as possible, just unsupportive. Then he decided it was okay to let his mother and two younger siblings come stay with us in our one bedroom 699 square foot apartment without consulting me. While all of this was going on I was dealing with the diagnosis of my kids having twin to twin transfusion, in and out the hospital for about 2 and a half weeks with no consideration from him. I decided to leave and move out the apartment and it ended up being a big blow up where his mother and family and him basically attacked my mom and I verbally and just completed disrespected me with no regard or care for the fact that I am carrying his two children. Now here we are 6 weeks later it’s getting closer to my due date, me and him aren’t really speaking because anytime we do he’s extremely disrespectful and irrational and I’m just trying to keep my peace. I am trying to move forward and do what’s best for me and my children. I’ve just be notified that I will be getting induced at 36 weeks and I’m just anxious on how our coparentship will work out because of all the drama and disrespect that has happen while I been pregnant. I honestly feel like him or his family doesn’t even really care but I don’t want to be wrong and keep them away from their paternal side but I’m also not going to beg any of them to be in their life either. Any advice for me on moving forward with a healthy coparentship ? I really need it I’d like to try and get a plan in order before I give birth