John,
Have you done this drill before working with LB? Do you still do this drill on occasion?
This could be a daily exercise. Slow motion swings. I'm sure a few will do if performed on a regular basis. I've read about many simple drills such as this, and, if a handful were written down and practiced daily

, eventually, the gains may be substantial.
VJ Trolio would certainly approve.
Maybe it's similar to learning anything else. As learning piano, daily drills, drills and drills, scales and arpeggios’ and before ya know it, that Beethoven Sonata was pretty easy.
I’ll try it.