I always follow your posts. Can't help much at all.
I did fine .. https://csn.cancer.org/node/255429 and had a read, as always keen to build up my understanding of all things PCa.
What unit is your 0.03 then ? I've never had Testosterone measured, so no idea either.
re. PSA doubling every 3 months, as you know this is complex and so many variables. If you ask Onco will there be a 'max' value before further action required, however only time will tell, as you know. ? Your May value should give more indication, as they are not exponential, and we are measuring at 3 dec. places at a low level still.
Do I assume correctly you are having quarterly PSA tests ?
I will check with my brother who is starting RT next month , if he has ever had Testosterone measured (he has lived in Australia since 1974), my profile has some info about himself as well as myself (I had RP)
All the best