Github once did brownouts on features they were removing. For 12 hours, then later for 24 hours, they turn off the feature temporarily. The idea was to cause alarm bells to start loudly ringing for anyone still using it.

https://github.blog/changelog/2021-04-19-sunsetting-api-auth...

I don't know if that concept would work in this case, compliance is it's own beast, but I love that idea in general.