My understanding is that HCG suppresses LH, so you've only maintained part of your "natural production". Using a low dose of Clomid (e.g. 12mg every other day) to jump-start LH is likely a much better approach. I come off of TRT for 4-6 weeks every year and that is what I do.
I like to give my body a chance to be as natural as possible for a short period of time, and it is one 4-6 week stretch. That said, it is just my personal preference and I don't necessarily recommend it. If someone is perfectly dialed in then it is a risk to change anything since there is no assurance they can get back to where they were. I also use a very low dose of T so it is less of a an adjustment for me than it might be for others. I don't feel a huge difference but I don't have the same capacity for physical activity when I am off and my overall mental and physical energy level is a bit better when I am on.