I think this method is not appropriate for this kind of music. I barely recognize it. Playing technically it is not difficult at all. Playing though how it is meant to sound is quite difficult however! The problem to be taught is in the emotional qualities, the "affects" of this music. In your method it is bereft of all musical qualities. Hint 1: please dont play it with metronome!
Thank you very much for your comment. The slow tempo naturally has its pitfalls and there are also limits to musical expression. It should also be a help for all those who either don't have a teacher or are unsure of the rhythm, the right notes and so on at certain points. Hence the metronome. Even interpretations by great pianists are sometimes very generous with rhythmic accuracy. But I would like to thank you again for your thoughts