glam, Since your H is severely depressed, he is in no position to help himself or you or the kids. He doesn't even care about himself, and can't even take care of himself right now - so how can he help you or the kids? It seems he has tried to help out around thehouse at times, when he's up to it. But right now, he's stopped his medication and he's in rebound. Stopping AD meds cold turkey pushes one back into depression. I have been there myself.
Please stop wishing he'd step up - because he can't right now due to his mental state now. You're only get to be disappointed by wishing he'd step up and be different. Try to not let his anger bother you. Remind yourself that his response is his responsibility and your response is your responsibility. A powerful paradigm shift.
May I suggest going to IC yourself and trying out EMDR therapy for your own emotional stuff? I think you'll find EMDR very effective and also enjoy it.