doing it correctly ? stretching

Hey there..
I got my stretcher and been using it for few weeks now, about 1-2 hours on weekdays in evening.
I am warming first then putting cream after.

My question is the following: for the stretch to work, do you need to feel it stretching, do you need to have 1/10 pain (very little). I tried various stretching intensities. Now I am on one that stretching it longer than before, and I feel some sensation of stretching near the public bone. Not sure if I should stop and go to my stretched which I did not feel much before, and that have not produced noticeable results yet.

I Just want to know when to stop, when it becomes risky...

Thanks

You have to learn when to advance. Follow the instructions that came with the extender. Slowly increase over time until you stopped gaining or you run out of bars. You'll feel the tugging of the penis when you get it right and the pain of the penis when you get it wrong. You usually wanna work your way up to an hour straight at a given level and then increase the intensity each time you make it their. Try to stay at that level for a week straight to make sure it's not cheating you and then add a bar or replace 2 smalls bars with one big bar. It takes time when just using an extender. I hope you're also doing manuals along with it. Hope this helps.