Struggling with Health Issues as a Fat Vegan

I am a fat Vegan. I was recently diagnosed with 50% stenosis in my carotid artery, hypermobile joint laxity, and survived covid. I no longer work ( trying to get on Social Security) and pretty much don't leave my bed due to extreme fatigue, lightheadedness, shortness of breath and joint pain. i am only 49, and I worry things are at a stall if not getting worse. My current efforts include stopping coffee and the sugar i used in it, eatting more apples and bananas, oatmeal, brussle sprouts and more "cooked food" vs easy stuff. I have no one to keep me accountable except myself and though my mood is pretty solid atm...i can't help but think this is as good as it gets. Your thoughts?