I’m in the same situation as you. I had to drop my routine to 50 jelq after a 10 min warmup, and it still causes me to take 2 days off in between. I think I may also be gripping too hard. Jelqing is definitely not pleasurable for me.
I was always under the assumption that I want to feel blood moving through my dick during the jelq and an expansion of the gland to do a proper one. To get this feel I have to get a pretty tight ‘OK’ grip. Am I approaching this wrong?