Need help with testicles shrinking..

Hi everyone.

So for context I’ve done 2 cycles previously only testosterone. My balls never got smaller and my test always came back.

Now doing 400mg test with 200mg mass per week with hcg. My balls have suddenly decreased in size by about 30-40%. My sperm count has also decreased. I wanted this to be my last cycle as Im satisfied with my physique and don’t want to be on trt for life.

How can I bring them back? Will hcg do this on cycle with more time? I feel like once I come off the hcg will be more effective.

Id appreciate any help. Thank you.