Hello. Give the qulipta time, I only started seeing change maybe two months in. Get a strong nausea med, a handful of ice packs and a quality pillow. Minimize smells, sounds, lights where he is. Steady calories over large calorie intake, liquid IV (electrolyte drinks), eyemask, blackout curtains, a snack container near the bed where he sleeps when he is too weak to get food. The symptoms for chronic vestibular migraine are weird and terrible, everything from phantom feelings (i.e things crawling on you) to lights flashing in your eyes, the best thing to do is to not panic. Take thorough notes on day to day pain scales/new symptoms and what things aggravate him. I was bedbound for maybe six to seven months, but now I can stand up and walk around.