The truth is, your "subjective" tolerance, that is, your mind, if you will, is aware of the effects of the drug. Just like getting laid the first time. Of course, you repeat the process, and in a biological sense, the action is identical to that first time, but your mind is less impressed, as the first time was a major surprise for it. Does my complicated metaphor make any sense? Sorry, I've actually been reading Julius Caesar and I'm beginning to talk like an Elizabethan poet.
Anyhow, as steady has so shrewdly implied, we do not have enough information to really make an educated guess. Truthfully, even if we had the information, it would still be pretty difficult. There is a reason we don't allow threads of a philosophical/existential/esoteric nature, as they are actually impossible to answer with any kind of scientific definity, so the discussion by nature becomes perpetual and we don't have enough room on our front-page for these discussions.
The best answer you will get, which is why this is getting closed, is that your tolerance, maybe, probably, will be reset within a "matter of days or weeks, but probably closer to 2 weeks". I'm talking full homeostasis. If you're just trying to catch a buzz, the time will be shorter, but again, we can't sit here and produce endless conjecture on the subject.
Sorry Dude