This right here. I played three sets for four nights a week for twelve years and never really had much trouble, but when I came back to playing again years later there was definitely a breaking in period when my fingertips were a bit tender. If you start slowly and increase the amount of time you play, you will get there, but it does no good to play through the pain, as that will only cause bruising and, in some cases, nerve irritation.This isn't about your callouses. Those protect the top layer of skin. You're very likely bruising the deeper tissue closer to the bone. (Or perhaps even irritating the fingertip bone itself if you don't have a lot of tissue padding it.) I run into this occasionally and I've been play for longer than I care to admit.
Shorten your practice sessions, or break them up into smaller sessions with breaks in between. You don't want this to become a chronic problem driven by inflammation that's easily triggered. Playing for a few hours is equivalent to playing most gigs. Stop playing before it hurts and give yourself time to recover before playing again. Eventually you'll be able to play longer with less discomfort.![]()
I do occasionally find that I get a touch of nerve inflammation in one of my fingertips, but it never gets too bad. It bothers me more after I stop playing than during.