Peripheral neuropathy recurrence after stopping ethambutol

I was on ethambutol as part of Big 3 treatment for MAC for a year with no side effects. The MAC returned a couple of years later and I restarted the big 3. This time, however, I experienced peripheral neuropathy in both feet. I was taken off ethambutol and the neuropathy almost completely went away over the course of about 6 months. I'm off all MAC treatment currently.
Now, however, without restarting the ethambutol, the neuropathy has returned, and rather quickly. I cannot find any reports of flare-ups without restarting the drug.
Has anyone else had a return of neuropathy without restarting ethambutol?