TRT helps to increase testosterone levels in the body, but it also reduces the production of sperm by the body. The best course to getting your sperm count back on track is to stop taking a testosterone supplement, but if you still want to keep using testosterone and maintain a healthy sperm count, you can use Human chorionic gonadotropin(HCG). Low dose HCG maintains testicular functions and also increases intratesticular testosterone levels without disrupting sperm production.  Before making a decision, ensure that you speak with your doctor.