update
The baby powder certainly seemed to save the day. dickerschwanz gave a good explanation as to why the baby powder could work - Prevent blisters wIth vac-hanging (p. 2) see post 27.
I have been pumping consistently for 1 hour at 4 - 14” Hg each night using the glans protector with baby powder but have not used the sleeve for 3 days as I was packing the sleeve. I found my fluid build up gradually increased, comparing it at the end of each session. I did a jelq session immediately after pumping and again early the next morning when my EQ is best. I found this jelqing virtually removed all my fluid build up.
My next approach is try the sleeve on alternative nights and see how that goes. When I get around to getting a larger cylinder I will wear the sleeve with each pump. I also have a 2 1/4” leluv cylinder I can use with my air pump. One option I might try is a 30 min water pump session followed by another 30 min with the air pump and larger cylinder. Has anyone tried something similar?
Another thing I found was to fit a short silicone sleeve at the base of my cock to help me get erect before I fit the sleeve and glans protector. I understand it is good practice to pump erect and suspect that might reduce fluid build up.
Regards
Austfred