Low SHBG guys respond really well to daily injections or testosterone cream on scrotum. Testosterone cream scrotum increases your DHT way more than Proviron will ever.My SHBG was low on my bloodwork prior to starting the Proviron. It was 11. My free Test was high at 800 and E2 was 76 on the bloodwork. Wouldn’t high free Test with low SHBG cause high E2 levels?
I believe you are correct with the hormone fluctuate being the problem. My symptoms feel very similar to when my E2 was high last month from using TPP and NPP. Those symptoms (anxiety, insomnia, depression) are what prompted me to get the bloodwork done. The symptoms this month from the TRT and Provin are just much less severe, but they are there.
First you have to dial your TRT and go from there.