Toxic Manager

I’ve been working for the same company for over 5 years. I work in a male dominated field, but for the most part, have navigated my way through. I have been in my current position for over a year. A few months back I was approached internally about an opportunity in a different channel at my company. I went to my boss, who I had a good relationship with, to get his advice/be respectful about being approached. He blew up. He yelled & screamed & put me down. He ended up blocking me from the position because I am one of his best performers and he did not want to lose me. Ever since that, he has had a vendetta against me. He’s made my work exceptionally harder by trying to make me “look bad” in front of senior leadership and overall making things more difficult because he felt that it was “unfair” for someone to approach me about a job because it wasn’t in “his control”. He has used my upcoming wedding as a reason he felt “I was checked out” even though I had plenty of work to prove how hard I was working, he put extra work on my plate vs my male teammates, and has pinned emotional decisions he has made onto me so he didn’t look unstable. I had a major meeting recently with a client that showcased how hard I work and received tremendous praise from the client in front of my boss and senior leadership. & now my boss is telling me how great I am/my work is. I am desperately seeking advice on what I’m supposed to do. I’ve gone to HR after the first of two times my boss has yelled at me, which I was told from HR that he was emotional and to lay low... Senior leadership recently got wind of how he has been treating me but I haven’t been talked to about it. I am activity looking for a new job elsewhere but until I can change companies... how do I keep my sanity?