Wow, I didn’t connect my extreme sleepiness after meals to my long COVID. I thought I was just so weak I needed split sleeping: 4 hours at night immediately after a late dinner & 1-2 hours after lunch.
I did the 1 meal a day for a while, but do not recommend—the way to manage autoimmune is balance so nutrition is key. Try the opposite—tiny meals throughout the day, enough to keep your blood sugar even, not so much you are overworking your digestive system. Daily exercise is a must—I know you are tired, but movement will help ( a dog is a great motivator for a daily walk!). Good news is this symptom has finally abated after a couple of years—focus on your overall health & stay in touch with your support