You can literally just click again after the first attempted action goes through after a click for skilling. You need to know how many ticks it takes before you can actually complete the action though, so like for mining if it takes a minimum of 3 swings before you can physically get a coal you have to click and wait those 3 swings before clicking again to start the rng over. It works for mining, fishing, firemaking and woodcutting so far as I've tried.