You need to break him of his super alpha toxic masculinity, and put him back in his place. Start giving him female hormones, without his knowledge if need to be. Do you peg him? If not try to start. Try to feminize him any way you can. Make him wear female clothing. Keep him locked in chastity and use a butt plug in him. Cuckolding and/or forced bi training where a more alpha male penetrates him should break him and make more submissive.