At home, in studio, on stage, or during your week..?
and what are you accomplishing musically?
How many hours? Normally I play between one to four hours a day at home. On stage varies so much, but I'd say my performance time would average to 20 hours a month.
What am I'm trying accomplish musically? So many things!
Fluency in all 12 keys, with scales, chords, appregios, licks, and tunes.
Review the easy classical piano pieces I've learned over the years.
Review my popular material - both solo piano and arranger.
Learn a tune every week or so. Again both on piano and keyboard, sometimes guitar too.
I try to sing just about everything I play.
I am a better reader than "ear player" so try to learn something by ear every day with the hope of evening out those two skills.
On drums, I mostly prepare material for my students.
On both drums and keyboards, I often have to prep for gigs.
On guitar, I try to review the easy classical pieces I've learned over the years, and strum chords and sing.
On chromatic harmonica, I review tunes.
On vocals, I do vocal warm ups and sing along with my favorite singers. Mostly Sinatra.
Maybe "TMI" (too much information" but you asked