I really enjoy your shares @Moonhare , as I get very different insights watching an already accomplished musician learn the guitar. Thanks for sharing your journey with us.
I just thought I’d throw in what I learned about “tramline” finger syndrome. (Ya like that one? I just came up with that. Of course, I stole the metaphor directly from you just now.) Anyway, I use a nail file to take down the calluses and get rid of the grooves. One time, I used cuticle scissors to cut the thick callus so I could save time. That didn’t work as it took away too much of my callus and I was left with having to build my calluses up again. It wasn’t like starting from scratch, but it was too aggressive as my little fingies were very tender for the better part of a week. But when I use the file to get rid of the grooves as much as possible, I still have the hard pad underneath the skin, but I don’t have the really thick, dead skin the builds up around the groove and creates the “tramline” finger syndrome.
MG 😀