I would suggest looking at complex carbohydrates, like sugars and starches, for elimination. Also, another big inflammation problem is seed oils, such as canola, margarine, flaxseed, sunflower seed, etc. You might consider going keto, or at least low-carb, for a while to see if that works.

I've read a couple of studies on this. Basically, if you were prone to metabolic disease before COVID, it will activate it. Unfortunately, I'm not a medical professional (nor do I play one on TV), so I can't really interpret the science as much as a doctor can.