Sorry to take so long responding!

I used a variety of methods over the years, starting with manual stretching and T-tape, which I'm not super fond of but might have helped in the beginning before I had much to work with. Luckily my circumcision was not super tight originally. Later on I tried various devices that hold and stretch the skin with a silicone cap over a rounded elongated piece that sits against the glans and later, ones that inflate the skin with air while its stretched over a similar device. I also used these silicone "cupping" devices to suck and stretch the foreskin down this ~3 conical tube, and secured the suction with silicone finger sleeves stretched over the tube onto the skin of the shaft - I haven't seen anyone else mention this method and found it very helpful.

As the foreskin grew more I found different manual stretching techniques to be more effective and I mainly use those now. I experimented with modified adhesive pads on a TENS device to strengthen the loop of muscle at the edge of the foreskin to ensure more secure coverage, which may or may not have helped but was, uhh, interesting I guess? Also icing the pulled forward foreskin after a hot shower also encouraged tightening at the front end for a more natural constriction and retention during my day.

I intend to continue stretching for a while yet until I'm satisfied with it, and able to have full erect coverage, t pulls about halfway up the glans now when fully erect. I haven't had any ill effects or injury apart from the occasional mild scuffing, had been haphazardly attempting to restore for about 2 decades but only really began in earnest during the pandemic when I needed a hobby.

Thanks for asking!