Q: and it always made sense since it felt like memorizing smaller chunks would make it easier. The thing is, when moving from first set of 8 to second set of 8, the checklist becomes twice as long when trying to make the change fast, since I have to run the checklist of 2 4 note chords as opposed to a big one. So my mind is split making sure I got the left hand right and then the right hand right (and with the memorized finger positions).
A: does your keyboard have sound? make sure you are checking how these things sound because what you are describing sounds frightful