There is a old joke that goes:
I told the doctor that every time I move my finger like this it hurts.
He told me. "stop doing that."
If eating one large meal is keeping you symptom free and healthy then it seems you have on your own found your path back to good health.
"You were not there for the beginning. You will not be there for the end. Your knowledge of what is going on can only be superficial and relative" William S. Burroughs