Your doc doesn't have you on TRT, he has you on a mild steroid cycle with poor estrogen management. TRT dosages for test cyp are typically half of what you're currently prescribed. Additionally, Letro will kill your libido and it's notorious for being tough on your joints as well. That being said, most people on a cycle will take .25 - .50 mgs daily and bump it up to 2.5 mgs at the first sign of gyno.
I hope others weigh in on the use of Letro for estrogen control, it's not something typically seen on these boards.