Good morning
I don't think it would work for me to spend my time studying material that was not of interest to me - say country as an example. But I am older and started late, so time is a precious resource.
If I were younger then maybe from a pure academic sense I would want to spend time in multiple genres. But I am old.
I think the right answer depends on how you want to spend your time and what your ambitions are. If you wanted to be more rounded, as my guitar teacher is, then time in jazz, blues classical... It's all good. But he started at 12 and is now my age. So again, the problem comes back to time and how to manage it.
Good luck with it.
edited
This year the diet is definitely gonna stick!
