Suggest getting a teacher who specializes in the music you want to work on. - jazz or motown or Jaco's material, etc.
For me: I studied with Kai Eckhardht( John McLaughlin, Ralph
Towner, Billy Cobham). And I had relearn a lot basics again.
Bad Habits with hand technique, inaccurate 16note placement, etc, etc. Humbling but I learned.
When I had a better control with that, we started to work with a drum machine. I had relearn placement of time again:
behind the beat vs on the beat vs on top of the beat.
Humbling again. but it made me very aware of those factors.
Getting back to the basics- at first, then branching out into
one field at a time. Once you "relearn the basics" again, then
you can learn other genres faster.
And it will get somewhat easier: Once you get to a certain level of proficiency. (growth). You" ll discover you have to work on other weaknesses.
I play & sub in different cover bands -motown, funk, jazz, off & on. Without basics covered in theory, grooves, solos, etc,
I could not do a good job, or communicate musically with better players than myself.
IE:Or if they want you play a certain chord with voicing.
Ab#9#5/ Gb for example. You'll know what notes
to play.
For grooves: suggest either a drum machine or software program such as Band In The Box. Granted: they 're rigid &
stiff. But they' ll give you a feel/taste for the music.
And tedious too.
With a drum machine; if you learn to program the basics with
"Funky Primer" (drummer book) or have some knowledge about
drummer language- it give you an understanding about how
a drummer "thinks". It helps a whole lot. You' ll be able to
communicate with the drummer better and think as one unit.
I had to sub for a friend at the last minute last year.
With no rehearsal either.
Guess who the drummer was?? Donny Baldwin (Jefferson Starship,Cold Blood, Elvin Bishop, Jerry Garcia,Grateful Dead).
We were just playing cover tunes, motown, funk, & rock stuff. But without the basics down, I could not keep up with him on different styles, or different placement of time for
the different styles. I sweated that one out too. And
he was very happy with my playing,
I was surprised & flattered too.
It all helps.