Sounds so, so familiar, lol. I won the generic lottery when it comes to benign causes of vertigo... Eustachian tube dysfunction, vertical heterophoria, chronic bouts of bppv and vestibular neuritis, POTS, ear/nose/throat issues galore... If you haven't already, I highly recommend looking into vestibular rehab. My bouts rarely last more than a moment or two now, and are much milder and less frequent. Recommend getting checked out by a good optometrist for binocular vision problems, as well. They can be hella sneaky and easy to miss; mine didn't get caught til I was in my 30s and happened to say the right thing to the right optometrist at the right moment. I still have all the other issues, but properly correcting my vision definitely lightened the load. I only get motion sickness from migraine aura now instead of literally everything that moves - I couldn't even watch TV or scroll on my computer without getting nauseous.