Okay. So, what should I be doing with my TRT?
1. Eating a low-fat, heart healthy diet?
(i.e. predominantly vegetarian, less red meat and sweets).
2. What should I do about estrogen conversion and shutting down my body's own production?
I believe we've been over the estrogen question before....numerous times....there is no way to forecast if, why, when etc. your estrogen will spike, IF and WHEN it happens you address it then. There is no "cookie cutter" "cycle with ancillaries" set-up for trt. You just start it, then get blood tests every so often, go by feel and what you see in the mirror, and adjust ancillaries accordingly to alleviate any sides/rises in estrogen. Again you will not be taking anything for anything other than the test gel, and for that matter? you need to get to a level that is where you want it to be (700, 800, whatever) before you even begin to think estrogen control or DHT control or any controls. This will take several months at 5g then 7.5g then 10g (unless your doctor will allow you to skip up to 10g from 5g which mine agreed too.)
as far as shutting down your own testosterone? that is the whole idea here, not sure why you are concerned with that? if that concerns you, then trt is not for you. trt supplies a source of exogenous test into your system, and shuts you down to essentially zero endogenous test production. If you don't want to shut yourself down long term, then do as many in here would suggest and try clomid or troubleshoot all the other possibilities for your low test result.
The diet? I am a macro guy personally....I set my macros up, 250 grams protein, 250 grams of carbs and 90 grams of fat (just random #'s here) and I eat whatever I want in order to get to my macros/calorie amount I am looking for. The higher quality the protein and fats the better your results will be of course...carbs? I think they are just fuel and who cares what kind of carbs you take in. But again, diet is up to you...good fats are more desirable than trans-fats obviously. There is no specific diet that complements trt, same as with cycles. It varies person to person, and varies as to what your goals are (cutting, recomp, bulk, maintenance....). trt is just going to get your test levels to where they should be if your endocrine system was functioning optimally and producing high test #'s (as in not 200 or 300 or 400, but 600's to 1000 range), its not like you are taking in supra physiological amounts of test here that require major alterations in your diet.