Bimix to Trimix jouney off with a thud

[Reggieman]

After having a radical prostatectomy 10 years I started using Bimix after disappointing results from a penial pump. Bimix gave satisfactory result at 30/.5 (30 mg papaverine/.5 mg phentolamine) when injected at .15 ml per injection. Over the years its potency began to reduce. I had the formula upped to 30/2 and then January 2026 I had it upped again to 30/3. Unfortunately, the last two changes did little to help me secure an erection that was useful for sex or manual masturbation. On that last doctor examination, he suggested it was time to switch to trimix.
I went back to the same urologist expecting to be examined but instead was met by a Nurse Practitioner with an apparent attitude. Long story but I won’t bore you with it. After dealing with their office incompetence, I was able to obtain a script for Trimix 5 mcg/.5 mg/15mg/ml/injectable) (PGE-1 + Phentolamine + Papaverine). What volume of trimix might be standard as my first injection.
Retired. R.P. 2016. Bilateral nerve sparing surgery. Now use .15cc of Bimix twice weekly & anorgasmia, moderately incontinent. Wife no longer interested so go solo with Electro-stim using Erostek ET-312. Now am Type 2 diabetic.

**Update-6-15-2026, still no response from my urologist's office even after an additional call to them. No idea what's going on with them but I guess they don't want my business. I may have to go back to my urologist at UCSF who is 90 miles away.

Any idea what a safe starting injection would like? How many units?