I wonder what would happen if you just stopped everything and let your body recover on its own?
All that would happen is that it might take slightly longer for his natural levels to reach baseline. But not much longer, if longer at all. His levels are going to end up at the same exact place whether he does HCG mono for 3 weeks or not. All doing the HCG mono is going to do, hypothetically, is force his testicles to produce endogenous testosterone, which will then start to drop once he discontinues the HCG, and hopefully his HPA starts kicking back in and starts producing enough LH and FSH to make sure his testosterone levels don’t go too low. But HCG is as suppressive on the system as testosterone. So LH and FSH will be at zero, until the HCG starts to leave his system.
Since HCG is just as suppressive as as testosterone, it’s debatable whether it will be a smoother transition doing HCG mono, and then stopping, or just stopping cold turkey. Either way, your suppressed HPA is not going to come back online until the HCG is out of your system, just like if someone were to stop testosterone by itself. Either way, the HPA isn’t going to come back online until either are out of the system.
Now clomid, that’s different. That’s not suppressive. That tells the pituitary to pump out more LH and FSH. So clomid might actually make sense. You raise your levels with clomid, and then taper off. And as you taper off, hopefully your LH + FSH levels end up just dropping, but stop once they hit your baseline.
Either way, you’re always going to end up at wherever your current baseline is. Using clomid or HCG isn’t going to change that. There’s no such thing as a “restart”. Clomid just offers a smoother transition period between testosterone use, and reaching your baseline. HCG is just as suppressive as testosterone, so there should not be much difference between stopping testosterone cold turkey, and using HCG mono for a period of time after discontinuing testosterone. By using HCG mono briefly, you most likely are just extending the period of suppression, and delaying the process of your HPA kicking back in.
