After reading this myself, I realize that I can only own my own actions and I am not responsible for his. He needs to be responsible for his. He is deflecting, projecting, whatever he is doing and I can't fall into that with him.
Sorry I didn't answer your question mindfull, I don't know how long because it seems to change daily. There are days that I wonder if I can keep this up at all because I don't even recognize this man. And then I see him for short windows and it makes me hopeful and want to stick it out and DB for a new M.