SOPP 715: I'd like to play more complex pieces such as Bach D minor "Dorian" toccata and fugue fluently

Let’s start episode 715 of Secrets of Organ Playing Podcast. This question was sent by Ben, and he writes:
1. Goal: To play more complex pieces such as Bach D minor "Dorian" toccata and fugue fluently
2.  Obstacle: Advanced age (76) although I did study organ at ages 15-17 and violin from age 9 and have a good knowledge of music theory.
Fortunately now being semi-retired I have time to practice, so help to get back to where I was as a teenager and advance beyond that will be useful. Thanks! You can support this channel by becoming a member here: https://www.youtube.com/channel/UCO4K3_6QVJI_HlI5PCFQqtg/join If you like what I do, you can buy me some coffee: https://www.buymeacoffee.com/organduo PayPal: https://PayPal.Me/VPinkevicius We support Ukraine: https://www.blue-yellow.lt/en My Hauptwerk setup: https://www.organduo.lt/tools.html Total Organist - the most comprehensive organ training program online: https://www.organduo.lt/total-organist Secrets of Organ Playing - When You Practice, Miracles Happen! https://organduo.lt Listen to my organ playing on Spotify: https://open.spotify.com/artist/0ckKPIvTWucoN3CZwGodCO?si=YWy7_0HqRvaZwBcovL- #secretsoforganplayingpodcast #organplaying #organfingering