Definition #2 of "regime" makes sense to me for this context, though I think regimen is more common in the US (regime is more common in the UK): https://www.go

Definition #2 of "regime" makes sense to me for this context, though I think regimen is more common in the US (regime is more common in the UK): https://www.google.com/search?q=define%3Aregime https://www.google.com/search?q=define%3Aregime