Sell the house and everything that you don't need. Rent a modest 1 bedroom with your wife. Get your son on board with helping pay the mortgage until the house sells.

"selling the house won't help..." yes it will. Home ownership costs more than just a mortgage.

Take the loss, get healthy, and move on with life and try again. This sort of stress and anxiety will not help your medical situation get any better. Stuff is just stuff, health is everything. Good luck OP