HB - I am so sorry this is becoming to difficult for you and your H. I don't think you should give up yet either. Your H sounds very depressed and everything is gloom and doom in his eyes.
I think you are right to go back to the same DB techniques that you used during his A. Give him space and make good use of every minute that you do have together by wowing him with what a wonderful, positive, gorgeous woman that you are.