Stretching Uncircumcised Penis

Hi guys I wanted to ask if some of you is Uncircumcised and hat a success with the stretching. I have a little fear while I stretch because of all the extra skin that we have. What I’ve noticed is that even though before I start my stretch meaning when I grab 1inch(2-3cm) behind my glans and start pulling for 30 sec I get my foreskin all of the way(I pulled everything back and grip behind the glans after that) and after I let go 30 sec in I still get some on the skin that I pulled away earlier. So I was wondering if someone has any advice what is the best way to stretch an Uncircumcised Penis.