If you don't mind shutting your computer down then press windows key + R and run "shutdown -s -t 10800" to schedule shutdown 3 hours later, 10800 being seconds
Yeah so it drinks at 20 prayer left every time without fail (level 52 prayer). I've never coded for scape before but when I attempted to it was hard af so didn't bother but wouldn't this be better randomized? Is it not as simple as making a random function to drink between 1 and 32 prayer points...