We’re rolling right along to box 4! Let’s ask this question, though. When should I add a new box to work on? Well, for each person, that’s a little different. I think you should be able to play the scale backward and forwards without much trouble at a certain bpm. Let’s at say 95 bpm. Does that number hold any special value? Hell, no. I just used it as an arbitrary number. You can pick any number you’d like. The METRONOME is the key part here! You should be able to have some “pressure” on you to keep you honest and moving.
I know you want it! But is that enough? Obviously not! You need to do the little things EVERY DAY!