Found my answer.
Of course, my E0601Auto-CPAP prescription won't get me an ASV machine through a commercial supplier. I'll just have to deal with my private party breathing machine phobias.
And I now better understand some comments made... I'm brand new to all of this to the point of looking up every acronym (sometimes repeatedly since new learning taxes my addled brain.) Please understand when I don't grasp what should be clear and straightforward or not need repeating, I'm not ignoring or discounting what is said... I'm just slow on the pick up.
5 min 5 max resulted in a higher AHI again (to 28 from 18) so I went back to 5 min and 7 max last night.
I made it through the first 4 hours sleeping on my side - instead of back - and those 4 hours were approx 4.7 AHI !!
After a bathroom break I think I rolled to partial back pretty quickly so the last 2 hours were approx 16 AHI for an overall 8.61 AHI.
Best AHI of 11 nights and no CSR noted for the first time.
I slept poorly with more wakefulness than usual and a backache but obviously I'll be training myself to sleep on my side.
I'm open to further pressure change suggestion or any other guidance.
I've decided to purchase a private party Aircurve 10 ASV but haven't jumped yet.