No Increase In Bpsfl Post Hanging

So before I was doing normal hanging and my bpsfl seemed to be going up post hanging session than pre session most of the time. Then I switched to interval hanging recently and it wasn’t working because my post session fatigue was staying at 100 percent. Now I’ve switched back to normal hanging and I’m still only at 100 percent post session fatigue measuring my whole penis. However before when I did normal hanging I measured my whole penis first, but then switched to measuring to my circumcision scar. Should I just go back to measuring my circumcision scar instead? Could that be my problem?