I think what we’re seeing here is that the first 1-2 cm are easy to gain, and as the real challenge comes to gain more than that, many drop off, or are satisfied with their new size.
Yes I am getting a Vachanger soon, and then I will grind out the last of my 2” gains. I cannot wait. :) :) :)
I find if you have to do something whether it is PE or weight lifting, or anything where time is a factor, enjoying it is the key to keep doing it, if you start to dread it you won’t keep going or quality dips. Find a way to enjoy it, and make it part of your day. Don’t go too intense or quick through the progression (relatively) And the gains will come :) I actually lost half an inch and got it back again and it took almost as much time as the first time I gained it. But just keep grinding and experimenting with new ways :)