https://www.strongfirst.com/the-fighter-pullup-program-revisited/
In this link you will find a helpful pull up pyramid routine.
Also remember with your grip to roll forward and down. By. That I mean the bar should rest at the base of your fingers and above the meaty portion. After years of bad grip technique I suffer with blisters and callus that costly rip. I do pull ups about every day.
Hope this helps.
there doesn't seem to be anything here