could be CIDP?
I have heard of GBS “turning into” CIDP. The symptoms are similar, though it seems that GBS symptoms are more acute; also GBS is of shorter duration.
Anything that lasts more than, I believe 2 months, is often reclassified as CIDP. But that really doesn’t explain what is going on with you, Beethoven. You may have a newly developed case of CIDP, which may have nothing to do with your GBS. In any event, I would get a second opinion. If this has been going on for over three months and you are now noting muscle wastage, it is time to see another expert. Do not wait!