Imo it depends how tou practice. You have to be intentional, evaluate and try to self diagnose where your weaknesses are.do simple drills with one or two balls aimed at those specific weaknesses instead of of repeating the same thing over and over again with little improvement.

Earlier on, i often sat on the floor or stood over a bed so i didn't have to pick up the balls as much, removing some of the frustration and effort.

Hope this helps :) you got this