Try eliminating fat and your proteins and replacing with redskin mash made with onion and garlic for flavor. Your problem of being stuck at that almost OK stage remind me of myself before looking into total fat elimination and the possibility that animal protein is contributing to Disbyosis.
We aren't properly digesting protein properly. You can maintain muscle with veggies and potatoes..maybe not win bodybuiling contests., but the malabsorption and leaky gut is serious and scaling back heavily on protein has helped me out. It was a frustrating thing having jock itch when all i was eating was mahi mahi steaks and greens. It was in theory supposed to be working.