Stretching for cementing pump gains

I was thinking a routine with manual stretching plus pumping.

Trying to cement eventual gains from pumping with the manual stretch.(plus gains from stretch ofc)

Will that be possible?
(since Ive hearx that pump gains alone Usually is temp)

Stretching seems to compliment pretty much any routine.
I’ve read a lot of guys recommending stretching before a pump session, just don’t stretch so much that it reduces your ability to get a good erection.

After pump, the effect of the engorged penis is momentary. I see people here saying this delay 4 days to happen.

You tell that “stretching seems to compliment pretty much any routine.”

How about some bend exercises for increase the CC before pump?

My experience is pumping will bring in length and girth gains and over time it’s permenant. It takes time, and the cock must be in the expanded position for some time
for the stretching to occur.

Post pump cock size is nothing to discount either, it’s pretty useful, and it’s a fun thing to do to pump up before you know you are going to have a sex session. My pump size lasts several hours.

How much time it must be in expaded position?
What is a good pressure to maintain this stage for stretch on the tube?

My experience tells me longer duration at medium to lower pressure has the most lasting effect. High pressure, short duration usually is uncomfortable & doesn’t last. I prefer time to allow total time of multiple cessions over an hour or more. I usually use multiple size tubes, starting small & working up. Don’t move to next larger size until you pack the smaller tube for several minutes. Be sure to take plenty of massage breaks to maintain proper circulation. When I am done pumping I like to use comfortable cock ring to maintain plumpness. This, for me results in a long duration heavy hanging cock.

I want to stretch more but I forget to do it. Too anxious to clamp and jelq.