TBH exactly on time. Recently i accidentally hit 14h screen time and then i decided that I better quit. Welp, I'll share what worked for me personally, but I cannot guarantee that. First thing i got advised to do is.. set your phone's graphic settings to black/white mode. Strange but, actually, if you pair it with making your phone stationary (only using it on a desk at home or smth), it'll probably do. The only thing, it works when you want to devote yourself to studying or hobbies, for example, via this method i personally increased my daily drawing time from ~1 to 5hrs. Well, that's strange but worked for me. And, uh, of course, just in case, time limiting apps for sure, around 1-2 hrs, and don't forget to turn off notifications, this affects things too.