[flamesabers]

There may be some empirical support for the 'peak' theory.
1) I certainly found that when varying my dose on a monthly cycle basis, I noticed increased growing pains on both sides of the peak intake.
2) Quite a few people have commented on an apparent short duration spurt in growth after they have completely stopped taking PM.

Personally I have attributed both those effects to the body being sensitive to changes in levels, not the actual level itself, that could also tie in with peak although in a lightly different mechanism.

I also vary my doses but on a much smaller scale and for very different reasons. For me, varying my dosage has always been about maintaining the brain rewiring rather than trying to stimulate a female puberty or achieving a growth spurt. It seems if I can keep the brain rewiring on track, the breast growth follows suit.