I've learned to be ruthless, a trait I have observed in my male friends that I have adapted as a strength. Sometimes a relationship becomes toxic. When you only get hurt, or the hurt surmounts anything positive that happens in the relationship. That is when I would advise beginning the separation process within one's mind and heart. He doesn't want to fight for you. Stop fighting for him. Start your own battle for yourself. To get yourself back. Do nothing ever again for him. He has made him stance clear. Keep a neutral face around him. Go 'Gray rock'. No frowns, no eye rolls, no grunting, no tells.
If you focused solely on the things that you dislike about him for the next few months and nothing else, I guarantee you that you will fall out of love with him. Don't clap back during this time, don't engage with him, because that shows you care. It shows yourself that you care and it gives yourself mixed messages. Give him no feedback, no evidence, give him no quarter. The objective is to no longer care and to free yourself. Just observe, and watch yourself observe. Notice your feelings, notice your reactions. Notice that you reacting to things is not an action from a position of power. A good self help book to utilize at this time is The Self Esteem workbook by Scheraldi.
Take off the metaphorical rose colored glasses... the fantasy that we tell ourselves that is in stark contrast to the reality we exist in. That you 'hope' it's going to work out, that you 'hope' he will wake up and change. Past actions are good indicators of future actions. We are pretty set in our ways after a certain age.
Check out Dating coaches on Youtube such as Team Jaxn, Mark Rosenfeld, that way you can have a better grasp of male psychology and what he and the next man might be thinking. There is also Kris Godinez, Dr. Todd Grande, Jordan Peterson, Katie Morton for a more psychological look. These are useful tools that will help you perceive things with more clarity. Check out Personality Disorders as well. If he shows you what you to want see/hear at times he can conjure the 'humanity' within himself just to shut you up, he is manipulating you, deceptive, and he doesn't really care.
I would say, pull away from his toxicity, the relationship... Sleep in a separate beds if that helps disconnect you. Say you have developed back problems (from carrying all his bs over the years lol leave this part out) and sleeping in a bed with him, when he moves, it irritates your back.
Get your finances and 'escape route' ready. It might take a full year to escape, but in that year you will be working on yourself, building yourself up. Not concerning yourself with his needs or BS. Men don't expect us to do this on our own because 'we need them and their ego'. Don't tell him about it. Men don't really care about the idle threats held over their heads, but when the woman acts and is gone, then they might care. But the object is not to get him to care, it is to get yourself to love yourself and find someone who is capable of loving you the way that you need to experience love.
Do whatever you need to do to get the title 'separated' so that way the courts can't rule in your disfavor. Think like a man, act like a woman. Get yourself out there. Go on a Dating website... have some friends that you trust take pictures of you in some nice outfits. Have them professionally done if you can. Get your makeup and hair professionally done if you want. Anyways, put these pictures up on the dating website along with a good bio that mentions nothing about your ex or of your pain. (I suffer from TMI so I have to be hyper-aware of this flaw within myself lol) Check your inbox in the next couple of days for the men who will be sending you positive messages. Then let them talk sweetly to you, allow them to be nice to you and to enjoy you for who you are.
I'm not saying force yourself to go out there and date before you have improved your mental image of yourself, but to look and see the potential. It might starkly reveal the neglect that you have endured in a way that really snaps you out of false hopes. Remember yourself. YOU ARE THE PRIZE! A man who wants you and cherishes you will bring you up, not down! I guarantee you, will you start to forget about that mess you called a husband in no time. Then you can leave him, on your terms. Take back your power.
You have to start empowering yourself. I am seeing evidence of Post Traumatic Stress Disorder (reliving, repeating trauma) in your postings, and he is showing you where to put your stress. My guess, he wants you to channel your negative feelings into your weight, so you'll focus on that, and not everything else that is going on around you.
I am going through something similar right now. Boy did my world change when I took off those filthy rose colored glasses!
I sincerely wish you self empowerment, and the best!!!