You definitely do not want to continue use of an Aromatase inhibitor (AI) once serum T levels have dropped into the physiological range--which occurs after the last Anabolic Androgenic Steroids (AAS) shot. I don't want to quit too soon, because an increase in estrogen as you are beginning to try to recover will do you no good. However, you risk driving E too low with an Aromatase inhibitor (AI) (which will further damage the recovering Lipid Profile), so you must be careful about that, too. It all depends on what your cycle consisted of.