Animisha Would you like to share the major changes you made?
I'll try to give a history. This goes back 20 years. It began a few years in of violin lessons. (1) working on a piece for weeks with no improvement, always working on the whole piece, all things. One day in disgust I dropped it, and worked on one technical issue; invented exercises, did so the whole week, never touching the piece. In next lesson, I played that piece I'd ignored much better than ever before. (2) another piece, always stuck at the start of the cadenza; failed, every lessons, for a month. This time I worked only on the measure where I was stuck, finding why I was stuck and a way to practise. I then circled every passage that had the same pattern (modulated) and did the same thing. Then made copies, and circled the 2nd-hardest thing, 3rd hardest thing and did the same. I practised fragments, and felt guilty for practising fragments, like I was "violating" the beauty of music. Later I learned that this is what musicians do.
Both these times I went from long practising for weeks with no progress, to shorter sessions doing "unmusical" things or fragments, with huge progress within days. How I practised changed radically. I learned from some musicians, for example, to play everything with like thick vanilla, add expression, and if it slips, go back to vanilla (that instrument) = stages. I also learned about short sessions when remediating or getting a new skill, since you'll go into bad habits if you tire, and attention span is short for that. Shortly after that I got a piano which I had played decades before self-taught.
With the piano I encountered a teacher: I was seeking ways to practice that were effective for getting the skills, and it was part of what he did. The "fragmented" thing I had invented turned out to be "chunking. There was "layering" of skills, bringing in what you had, waiting to bring in a skill you didn't yet have. Example: play both voices evenly - for one voice louder than the other, maybe have one super loud, the other super soft while getting coordinate - later do dynamics. Short sessions: or in longer sessions, keep switching what you focus on. Allow your body & nervous system to make changes over time and after sleep (over days).
That was my journey. I think you'll see why what I've read and watched here and there with MG was not new to me; they are variants of some of the things I learned.