Did you ever plateau or did you keep growing?
I am trying to counter balance my shape. I’m 5.75” midshaft and I want to get to 6” which I can for the rest of the day when pumping, but my base is 6.5 normal and gets to 6.75” when pumped. I don’t want my base to grow anymore, but I want to get to at least 6” midshaft.
I have not tried that prolonged low pressure. I have a LeLuv electric with a 2.3” tube. I usually do the cycle 3 with 7inHg for 2 minutes on and then release and repeat for about 12 minutes, then take a break, and usually do that again.