Sound like he started test for reasons not related to his stuttering. I would probably never run a cycle, but you shouldn’t shame OP for doing so. We all have different goals, and if he dreams about doing bodybuilding at a competitive level I don’t think it’s anyone’s business what he does to his body. Besides that, 300mg Test E is a pretty low-moderate dose, it’s not like he is blasting trebalone or 750mg Test a week.