@trumpetb Not sure if your calculation applies to me. I practice a full 60 minutes a day, 365 days a year, do not rest from time I start to the time I finish, other than clearing my spit valves, and turning pages to the next tune. Just this alone will give me 10,000 hours in 27 years.
But then there is gigging time, and pre-pandemic I was gigging 10 gigs a month at 3 hours of performance of which a third of the time was total lip time keeping the hour playing concept intact.
I started playing the Hammond B3 in night clubs at age 7, and practiced BOTH the organ and trumpet daily though to High School, then the trumpet almost exclusively thereafter. I am now age 67 which gives me almost 25,000 hours of playing experience. So, you may have to drive yourself a bit harder to achieve such a goal.
The result, is I can go into any gig, and play through almost any tune called out by the rhythm section, in any key, with a solid approach of confidence in my performance. This has resulted in my constant calls from area musicians to sit in or cover any chart (from the lead to 5th trumpet part) that keeps me playing routinely, and yes, back on track with my pre-Covid performance schedule at this time. From my perspective, those 10,000 hours + has really paid off for my music career.