I’m in the same boat with you on stubby fingers but even as a kid my aptitude for pitch and the ability to pick out notes came real easy for me. That inspired me to keep going and my mother encouraged me.
The left handed fingering is something I do enjoy working on. I never used tabs until I picked up the banjo. My reading music was never fluent. And when ‘midi’ came out it opened the door for classical, gosple, blues, ragtime, and jazz for me. learning it note by note. My left hand can reach octives on the piano but stretching beyond to the 3rd above the octive was my biggest disapointment in ragtime. STUBBY stikes again. Still not discouraged I made workarounds.
TablEdit reminds me of the MIDI programes that helped me learn music. Your advice ‘to work through it in small sections’ is very good advice indeed. That tune of yours we’ll call ‘Dougs_tune’ for now, till the real name shows up, is a big bag o’ licks for me and I thank you sir.