HELP IVIG not working post covid 19 infected April 2020.

Covid 2020, not bad case. Had Cidp treated for 4 yrs. Diagnosed, 2016 following ankle surgery metallic screws etc., 2015  late diagnosis, because all symptoms were attributed to ankle, Feet and hands.  Finally got Dx, NYC, great doc, IVIG got me out of wheelchair, but never back to normal, needed cane, stopped work.  Followed same IVIG w same doc until July 2019, doc left for bio pharm job. After covid, I slowly regressed, saw doc that replaced mine June 2020. New electros, worsened. Other than changing dosing and IVIG frequency, no other option is offered, as too dangerous, wont work, etc. I changed centers, got new doc, same answer, and now he has left for private sector too.  My CIDP has changed, not tingling, no pins, no dropped foot and wrists, no, numbness, now  aches, muscles tightness in feet, toes curling down, joints in hands feel achey and tight, feels like wearing gloves 5 sizes too small. Ankles range of motion so tight. Balance gone.  PT and stretching makes tighter ? IVIG almost feels like nothing or worsening.  Have read many articles people with neuropathy with covid have exacerbated.  I had metal tests on along shot the entire condition is some toxicity. I had tests of metals done by only lab in US that does it. I am sensitive to nickel, off the chart, which is in stainless steel.  I am unable to get any doc to consider any other treatment, or entertain the covid exac. as factor, or the metal. In NYC and excellence docs are now few. Now when I try to make appt with new doc. they get large records and tell me stay where I am, they wont have anything else, or say see a rheumatologist, may have wrong dx. Have had 3 electros, all COE docs,  said CIDP poly neuropathy.  I am frustrated, exhausted, and bewildered what else to do.  My IVIG nurse that comes to house says all her pts w CIDP,that got covid are worse, with similar symptoms.  They have been on IVIG ,  prednisone, and plasma phoresis exchange added. No changes. Any suggestions or input appreciated. Read here JIM LA, knows many other treatments, no doc here seems to want to hear it ? I don’t know how to contact Jim LA here, only see his replies to other people. Can anyone tell me how, so thankful. Sorry for so many typos, my hands so debilitated.