What is the problem?
Being on dr prescribed trt and doing leg lengthening is fine. Why would you want to stop doing trt?? Being on trt at a good dosage will actually help you!!
For example, better recovery after Physiotherpy , will not loose so much muscle, good test levels help nutrient absorbtion which aids recovery. I am on trt myself. Best thing in the world to be honest. Do not look at trt as a bad thing. It's better to be strong when you are 70 than weak and vulnerable, look at sly Stallone, swarzeneggar, dolph lungren, mel Gibson, terry cruz, Hugh Hackman, the rock, van damne. The list goes on and on or look like do lad trump .... Weak and fat
Trt is regular dr treatment, regular blood test which catch any kind of illness early, only bad point to trt is sperm production. You are on a good thing and you don't realise it. The people who get sick from testosterone injections are people who take mega doses and abuse it. Example bodybuilders