You are in a tough place. I found it handy to write down what I can still do. I had a moderate TBI decades ago, and brain injuries are more complex than LC brain fog. That said, both involve a lot of fatigue, and there are similarities to the recovery steps. Use your body and brain, but not to the point that PEM will hit you, and take a lot of rest breaks. Things like crossword puzzles, reading, and exercise are important. The emotional healing is important as well because we can be stuck in being ill. Escape the stress. I already had digestive issues when covid hit me March of 2023 (celiac and colitis). I keep a food log to see if any foods trigger bloating, flares, insomnia, rashes, and such. I can 't eat gluten, NSAIDs, or legumes, but dairy is fine (diets can be strange). Probiotics and psyllium husk can help with digestion (I'm 70 so an old GI tract).