Whats the normal for Newbie Gains and does natural size make a difference?

I’m asking because I’ve only been at this for about two weeks, and seem to have already gained a little over .25” BPFSL. The thing is, I’m naturally 8.25” when erect, which is something I suspect might make early gains easier.

That is sometimes referred to as a newbie pop. Gains are likely to slow from that rate, probably considerably. Time will tell.