The nice thing about IF is that in many forms, it's dead easy: you eat nothing one day, twice as much the next.

A particular form of IF I've heard of from several places is even easier: only eat within an 8-hour window each day. I often do that out of sheer can't-be-arsed-to-have-breakfastness.

(I hear that existing studies about that are pretty confounded, e.g. they find that people who don't have breakfast are less healthy but the effect disappears when controlling for conscientiousness.)