160mg a week is a great dose for Testosterone. For HCG 1500 units a week is what providers typically use for someone trying to actively conceive a child.A good description of HCG is that while on TRT and no HCG, your body closes the testicle test/spermatic factory down. With HCG it opens the factory and lets in half the workers. The main goal of HCG at higher doses is increased spermatic production. For general size, or cosmetic concerns, 500-1000 units a week tends to be good for most men to maintain most/all size. Each man is different & some recover faster than others as well. Before raising your dose further it sounds like you might just be slow to recover, and up to 6 months is typically the longest that recovery takes.Going higher in dose likely won't provide much therapeutic benefits & no matter how much HCG you use there will always be some amount of suppression. Raising your dose & spending more money likely isn't worth it unless the cosmetic size is very important to you — that's a good conversation to have with the provider overseeing your care.