Why don't you go on a January weight loss crash diet? Kick the moany entitled abusive fucker out. Lose 13st instantly.
Seriously. You can't live like this. It can't go on. You must be so ground down by his misery, lack of respect and self important attitude. What the hell does he add to your life? If it's only money he can pay maintenance and you can apply for tax credits and council house discount on your own. When he calls you fatty do you reply???
Wow, he sounds dreadful. Let him fend for himself when it comes to mealtimes from now on, and don't do anything about the house that benefits him; he can do his own washing, ironing and cleaning. Leave his dirty clothes at the bottom of the laundry basket each week and invite him to pay a cleaner since he sees earning more as so terribly important.
You're not beholden to him. Earning less doesn't somehow devalue you or your worth. It's perhaps time he fended for himself and realised that, actually, you are his equal.
I never comment on threads regarding how good/bad one's dh is. Till now. I am sorry, but this is so totally unacceptable. Situation completely reversed in our house, I earn double and work ft, he does 4 days. We completely share housework, cooking and childcare. And finances. Have my very very first LTB.