Hi Jocstfr, you might like to have a look at the foreskin restoration sites and techniques. Here is a link to the National Organisation of Restoring Men
only registered users can see external links
I started restoring many years ago. I'm more than happy with my progress so far. The techniques use mitosis, cell division, not pumping or vacumn.
I think there may even be a group here??
FYI, it's possible to grow skin to cover your glan and the skin just below, which would have been on the inside of your foreskin. Both those areas will dekeritinise quickly and sensitivity returns individually. It is not possible to regrow a frenulum, it's very special skin.

pke111