Hey,
I have 2 calluses on each hand – one under each of my middle fingers. They’ve been there for 3 years and they don’t seem to want to go away any time soon – when I had a 2 month holiday they still didn’t budge, unfortunately. So I don’t see them suddenly disappearing any time in the near future. I used to put special creams and stuff on them every day before bed to try and make them go away, but to no avail. I’m glad I’m not the only one at least!