I'm usually don't recommend doing all left hand stuff to increase left hand drumming. I only recommend doing left-hand drumming stuff to increase left hand drumming. That's just me.
I hate to oversimplify but I believe in doing it often enough that it stops feeling awkward. Eventually, it will start feeling good and become second nature... but it will take awhile. It doesn't happen overnight.I can barely do this exercise at all with my left. Just feels awkward and frustrating.
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