I really need advice...

So this is making me have anxiety attacks constantly and I really need outside opinions. My SO and I have been together about 6-7 years now. We have an almost 2 year old together. The shortest way to put it is he's mentally and financially abusive and my family has secretly helped me set up a way to leave with my child. I've tried to leave him twice before when his abuse became physical and now that I'm facing a chance again I'm honestly terrified. I'm scared separating from my child's father is hurtful to our baby. Everything in my mind says this is the right choice in the long run but it still truly scares me. I'm doubting myself again and don't know what to do. I don't really have friends outside family because of him so I don't really have anyone to talk to. I just need help...