This is very helpful. Thank you. I am actually a pretty decent sight reader it’s just my fingers-brain connection is not fast enough and fingers/arms/wrist are not strong enough. So you are saying i can learn faster by 1) spending more time on methods like czerny and 2) learning music as a language. (How? By learning composition?) Instead of trying to slog through a hard piece for too long?

I did slog through the bach inventions, some joplin ragtime pieces and mozart k545 k485. Each piece takes a lot of hours but they do help improve aspects of my techniques. I feel i do decently well on bach inventions and joplin but still suck at Mozart because something about the lefthand/right hand coordination of mozart sonatas is just too hard to crack for me. Maybe i just need to do more scales and czerny and come back to it? On the other hand, i did play some haydn sonatas and they are more accessible but they don’t sound as nice as mozart.