I think this may more for acute vertigo, but have you tried the Epley maneuver?
This appears to be a variation of the “standwich.” Please see the attached for an example.
I loved that book growing up and was so excited when the movie was coming out (on my birthday!)
To this day, that movie is the only one I legitimately walked out of. It was such a terrible adaptation.
The Downtime Project is a pretty interesting podcast that covers some large outages and discusses their post-mortem analysises. Worth a listen IMO, very interesting stuff and some good lessons to learn.