This is based on a misunderstanding. With TRT the rate-limiting factor for testosterone metabolism is how fast you absorb the testosterone. This is generally independent of SHBG. In the case of injections there is a depot of oil under the skin or in a muscle that is slowly dissolving and thus slowly releasing the testosterone ester. On average you can't use up this testosterone faster than it is released.... wouldnt the fact I have moderately high shbg generally mean i dont metabolize T that fast? Which is why lower shbg guys tend to need to inject more frequently?
Aka how far could I potentially drop in 3 days time?
I try to explain the overall situation with a fluid-flow analogy here.