Hang in there
You already know better than I, a few things that appear to assist the immune system in doing the job it does better than most of our special-purpose nostrums - like least-processed foods, wild salmon (?) and other options which intend to give the poor liver a break, too.
Pity we don't know much at all re how best to directly aid that system - since it is credited with sending in Fatherland Security to gobble up the teensy nascent tumors that are expected to occur in all of us (for reasons known/ not yet known.)
Wish you all luck in triage - of the mountain of conflicting sorta-data, growing daily.
At least you have direct access, presumably by now, too - a sense of (which? doctors got As.)
Cheers,
Ashton