I haven't found any visual illustrations of this dosage build-up so I decided to make one.
Attachment 10498
You can click the image above to see it in detail; I have made this small 60 day period graph to
illustrate what happens.
Do not take it as fact, it is not meant as such because there will definitely be mathematical variables unknown to me and I'm not a biochemist.
Because
I do not know how to account for changing average decrease and whatever else, this projection model would imply that it would stay stable after about 170 days, but
this is likely a false projection, since we do know that people can get toxicity after long-term use (years) depending on dosage and a changing average rate of decrease in the body could imply that it would simply continue building up regardless after half a year. Yes, it would theoretically taper off quickly at first and build-up much more slowly, but it would likely continue to rise uninterrupted if you took the same dose every single day.
This projection does NOT take into account other things and their overall effect on your health, like physical dependency and other important biochemical mechanisms.