I have no idea, but you can buy coffees that are lower caffeine varieties. Robusta isn’t generally great tasting but generally has a lot of caffeine and is added to blends for this reason (and because it’s cheap).

Trying full strength but low caffeine varieties might be a nice option.

https://en.m.wikipedia.org/wiki/Low_caffeine_coffee

Folgers makes and sells a “half caff” canister but you can make your own by just 50/50 mixing regular and decaf.