Your doctor sounds like he is throwing darts into the dark...and he has hit you in the nuts, literally.
200mg per week should have been the protocol (although still not ideal) and been stuck with a lot longer than 6 weeks. I assume you are running Test E or C? which have half lives of 4-5ish days.
Which means you take that 400 on monday and by saturday you have less than 200. By day 10 you will have less than 100 and should be feeling worse than before TRT started.
Spiking your levels causes the body to aromatize excess test into estrogen which is fine as long as the T to E ratio stays consistent and heavily in the favor of T.
That spike in T also probably at the very least slowed your natural production of T (which was slowed to begin with hence the TRT).
Now you have elevated E levels with out the added Test to balance the ratio. Before TRT you just had low T levels. Congrats your hormone sex change has been completed.
200mg per week would have limited these highs and lows for the most part but by day 6 and 7 you still would be feeling a little low.
A better protocol on even less test would be 100mg every 4th day.
The more often you inject the more steady your levels will be and the happier you will feel and the easier time your body will have adjusting to the new hormone levels.
I am new to this but I have found I can cycle up, down and around as long as I dont spike my levels with no need for armidex or other AIs. I am not special, first cycle I front loaded and the spike made my E levels go crazy. Go slow homie.