TRT is doctor prescribed and the goal is to get your testosterone levels into the upper/normal range without going over. That dose is typically 100-200mg per week. If you ran 600mg per week you would be roughly at 3000ng/dl when normal is TRT would get you somewhere around 700-900. Once you get into the high dosages, estrogen control also becomes a concern. On TRT your body will be able to control estrogen on it's own as long as your test dose isn't too high and you are pinning frequently enough.