The Lupron should be stopping your body from producing hormones. Since your body naturally produces estrogen, it would inhibit this production, thus making you need a lower dose of testosterone in order to achieve typical male reference levels. So it all sounds correct to me from that standpoint.
I would encourage you, if you are not already, to start keep a written journal of changes you're experiencing between injections, as well as regularly taking a picture of yourself at some kind of regular interval (once a week, once a month, etc.). Take these things with you when you go to the doctor. Most of the discussion regarding dosage should be in regards to your lab work, but anecdotal experiences are important in making sure you're getting the whole picture.
