Stretched length much longer than erect length?

I’ve recently been trying to increase my EQ by quitting all porn, which is very tough but I think has been fruitful.
I notice that my EQ has steadily been increasing with time, although I notice that my erections tend to be quite a bit different in length than my stretched length.

I use a vacuum-based hanger for a few hours 4-5 days a week, and have noticed that my stretched length measures out to about 8.5”. Erect length seems to be around 7 or so.
Does this mean I have much more potential for erect length as I increase by EQ? Or is this a normal disparity?

Thank you

I’ve always read here longer stretched length, is a precursor to erect length gains.