I wish I had the solution.
I have been down the road you are on. Two and a half years for me. Allergy meds made me drier, but did not clear my ears.

I have slept on a grounding mat for over a year. While I believe it helps circulation, it has not helped my ears. I also wear hearing aids with minimal help. My hearing loss is mild. It is the pressure and disequilibrium that I find debilitating. I have also developed tinnitus and hyperacusis which makes it difficult to use hearing aids.

My eyes are also somehow involved. I have blurry vision which contributes to dizziness.
I continue to look for solutions and try treatments, but so far no luck.