I knew this will happen, so what is you plan if he couldn't restore his lvl naturally ? stay miserable for the rest of his life hoping that his natty test lvls will pop up suddenly ? I was just being honest ! there is no shame or problems in starting trt in early age if needed !!! is not the end of life, is just a needle once a week. if you think it is so bad just think about diabetic ppl. And if it is regarding fertility ppl on trt can maintain it by using hcg
Again bud ! the latter suggestion is a last resort !! good luck