Personal Experience with HCG Induced Leydig Cell Desensitization

Hi.

So, it seems that I have desensitizied my testicles from 500 IU HCG EOD four times (mon, wed, fri, sun) every forth week for 6 months, 24 injections total.

But they are still making T, but not as before.
Before HCG, a LH of 7 gave me Test serum levels of 400 ng/DL, and a LH of 8 gave me Test serum levels of 520 ng/DL
Now, a LH of 10 gives serum Test levels of 450 ng/DL.
Before that high LH would at least give me serum levels in the 800 range.

Because of all the benefits of HCG, I would still like to use it when I start TRT, but I must avoid to desensitize my testicles even more.
Is that possible, or am I fucked? Will low dose HCG have any effect at all?
I have read a couple of stories of guys restoring some of the LH response by a several month pause, then 4 weeks with clomid and nolva. Is that just bull?