Is there a way you can keep your sperm count higher if your on HRT? Maybe running 1000iu HCG per week forever would help? Maybe taking some clomid cycles every couple of months? Is there a way?
Why are you on HRT? A true low test or messed up because of drugs low test? I am the latter so I am not hating, but IMO your best option would be just dealing with it and getting off and letting your body adjust naturally without the aid of outside influences.