You need to understand that all TRT is 100% replacement as whatever is left of your own T production gets shutdown. So it does not matter how little your T was. Injecting 100mg of test ester will yield around 70mg of [bio-identical] testosterone, that is 10mg/day and that is roughly what a young normal virile male produces per day.
If you do 200mg/week, your estrogen will be very much out of control.
Read the stickies, then you will know that your doc is nuts.