Toxic mother?

My mother and I have been having a lot of problems this past year. I changed my career path and she does not approve at all. I realized I didn’t like working in high schools being in my 20s I feel way to close in age to the students and now I work full time as a preschool teacher and I absolutely love it. But she treats me like I’m wasting my life and tells me I am because I should have done more with my education. My fiancé and I just got engaged. She tells me how much she loves him and yet she said she is disappointed in me. She says nothing positive about my engagement and when I try to talk to her about it she ignores me. I even tried talking to her about how I want her involved but it does not feel like she wants to be because all she does is tell me I’m stupid and I’m making a mistake and I’ll never be happy in life. His family loves me and is so excited about our engagement and all of our friends are happy for us. It’s just my mother bringing it all down. I don’t want to cut her out of my life but I don’t think I can handle the constant judgement and negativity anymore. I’m not really sure what to do