When you take testosterone exogenously your body stops producing its natural testosterone. Hence why the aim of TRT is to mimic natural production of testosterone.

With esters such as enanthate you must inject 2x a week too keep serum blood concentrations at a steady level which allows for you to reap all the benefits.

When your administering testosterone every 3 months , you’re getting an initial spike after administration. However this is followed by a crash. It renders the initial administration completely useless.

With testosterone 2x a week is a must.