3 sessions done. need to work on jelq technique

Hey guys I am three sessions in, and so far everything has gone smoothly. The only issue I have is that I’m not sure what erection level to jelq with, because I’m not sure what a 50% erection is. I feel right now like I am below 50%, but my dick tends to go from flacid to rock hard, and it’s hard to maintain an “in-between” erection. Does anybody have any tips to help correct this? Like what exactly 50% is and how to maintain this state?

Thanks a ton

Well only you can know what a half erection feels like, unless you want me to feel your penis around when your dick is in full erection and then again once you “feel” it’s at 50%. I jelq at 60-80% erection. If I sense I’m going flaccid again, I turn the porn on ! :D