Tough marriage and toxic mother-in-law

I am dealing with an extremely controlling and adamant mother-in-law. My spouse and I have known each other for over five years and last year we decided to get married. We didn’t tell our families, though. Last year was tough for us a couple and we fought a lot. His mother kept interferring in our fights and usually loved to encourage him to tell me to leave their house, where I was living. Lately we have been living apart, but things are getting better. We are talking and trying to reconcile. A couple of days ago, he asked me to stay over and I decided to do so. However, his mother created a huge fight in the middle of the night and wanted me to leave again. She was pretty nasty. She doesn’t want us to be together. My family too have had it and want us to divorce and move on. He wants us all to talk it out and resolve this once and for all. I want to let some time pass before getting the families involved. I feel we as a couple need to be stable and secure in our marriage before we encourage them to accept our relationship. I don’t know if waiting is the right thing to do or what to do really. My head and my heart are both telling me this is the one for me and to fight for it. But there’s a small window of doubt. Any advice?