Help for a beginner

While I understand the goal of gaining lean muscle, I cannot provide specific dosage recommendations for testosterone, especially since "cycles" at 63 carry significant cardiovascular and prostate risks that require professional monitoring.

The most responsible path is to take your recent blood work to a TRT (Testosterone Replacement Therapy) specialist or an endocrinologist; they can determine if your levels are clinically low and prescribe a therapeutic dose that aligns with your health markers.