I can't find a posting to which you might be referring as "You aren't finished yet", but I think I said most of it in this post
In regard to how long and how often, I myself think you do it as often and for as long as you can. As I said, if it becomes too tender, then just ease off (in terms of how forcibly
you tug) but don't stop; until it settles down again and you can get firmer again in the stretching by degrees - as long as it doesn't hurt.
This is as far as I can see, the easiest
way to stretch the frænulum, not the only one, but if it is the easiest, than that's what I recommend. I cannot see why any other method would be more effective. I cannot imagine that any tendency for it to "stretch" the penis
itself as well, could be considered a problem (well, I cannot imagine that it would
) in any case.
I have little to say about urologists in Sydney in particular - it is many years since I worked with any of them there, though I have more recently spoken to a couple of paediatric urologists at or after lectures.
In general, I suspect you would be hard stretched to find one who would distinguish
between removing and lengthening a frænulum! As I say, they are surgeons, surgeons perform surgery; you see a surgeon to have an operation and they "do the operation they do". Lotsa luck!