Not tried it, but have you tried sea bands? I’m wearing them from when I first wake at 5am until I’m preparing to go to sleep. Except yesterday. I kept them on overnight and woke up feeling fine yesterday morning. (I took them off after a couple of hours to give my hands some blood, and within 5 minutes the nausea started to return, so they definitely seem to be doing something!)
I must confess that I am also using the Nevasic app. It’s a weird music thing which settles the inner ear, or whatever. The first few days I had it, I listened to it a lot. Now my nausea is almost under control for large periods of time, I listen to it once or twice before I go to sleep (sometimes nod off while listening to it), and as many times as I need to in the morning, once I’ve replaced my anti-nausea bands. It takes 27 minutes, and I listened to it 4 times this morning before I felt well enough to stop - also had to eat breakfast during that time because my body demanded it.
I think that both things are helping me. But it is clear that things get worse when I take the bands off, so I recommend them as a dampener. (And I mentioned the app not necessarily to recommend it, but to let you know that it’s probably not just the bands which are helping me!)
Sorry I couldn’t answer your actual question. I look forward to hearing from people who can!