There are low caffeine varieties that can be bought just like there are high caffeine ones. Robusta tastes truely awful and has a lot more caffeine. Pure Arabica has considerably less and some varieties are weaker still. Combined with the fact that a lot of decaf is really “low caffeine”, natuarally low caffeine coffee is a a better choice I think. https://en.m.wikipedia.org/wiki/Low_caffeine_coffee