Oh, sorry MI is short for mental illness (depression,, anxiety, bipolar, whatever). It is hard if he is depressed-can you both talk to a therapist-just to help figure out coping strategies or ways to discuss things that won't stress out/trigger either one of you...again-just a suggestion but sometimes it can help because a therapist can help play mediator, keep it calm and away from blame game...
Also, I should have said in earlier post-if you have good friends/family willing to help-ask!! I didn't want to bother people, then I thought othets seem to do all/why can't I-my misperception, many people have help-someone take baby for 2hrs, just so you can nap-or run errands for you, etc