I remember my first piano teacher had an interesting technique to help at difficult parts of a piece.
Instead of playing the actual rhythm, I would pretend it was (kind of) dotted 8th notes alternating with 16th notes. Then, I would do the same thing, but starting with a 16th note, alternating with dotted 8th notes.
I would do this only with separated hands and always ff. It was very useful because it helped muscle-memorize every note transition.
Is this a known technique??