My Fiancé Loves His Mother More

I don’t know how to handle this situation at all. My fiancé always sides with his parents over me on every situation then gets mad at me when I get angry over how they treat me. I don’t understand. We’re getting married in 9 months, I moved away from my home to be with him and I have no family out here and I’ve never felt more alone. I love him to bits but he’s all I have out here. His mother does everything she can to make me feel like dirt, tells me I look fat, didn’t want my parents here for Christmas and now doesn’t want to pay for my family to come to our rehearsal dinner. I’ve never felt more alone and abandoned and I don’t know what to do. I miss my family and I hate being treated like dirt all the time. My fiancé doesn’t seem to understand. He forms his opinion and plans everything without talking with me and always changes his mind when he hears my point of view. But as soon as his mother says something he changes back to her. I just feel like he should support me because I’m going to be his wife. “Therefore a man shall leave his father and his mother and hold fast to his wife, and the two shall become one flesh” -Matthew 19:5 Am I overreacting? I don’t know how to feel or what to do about any of this😭