I thought that this had been posted a while back but I can’t find it.
Basically, the guy had extreme (pinhole) phimosis but wasn’t aware until he was an adult that the foreskin is usually retractable. He tried a few different things and had some set backs but eventually was able to full retract after about 1½ years of persistent stretching.
There’s other info on there apart from just detailing his weekly progress.
I figured it might help some people who are looking for information about this.
The blog is safe(ish) for work (just words and a few medical drawings, no photos):
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He photographed his progress. Not safe for work unless you work in porn or by yourself - it’s an extravaganza of dick pics:
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