Your tolerance will never fall unless, maybe, not for certain you taper off and stay off for several years. At 15x your prescribed dose, it'll be a long time until you can "feel" a 10-mg pill, quite possibly never.
You need to taper properly, you're going to need a physician involved and complete honesty. Benzo w/d is pure hell without a proper taper, even then it can be rough. A taper from that dose could take a couple years or more.
I'm thinking you best give up the idea of ever "feeling" a benzo again, except for very short term relief if you're in bad w/ds but that's a very dangerous game. Do not allow yourself to go into w/ds beyond a bit of craving, a little shaky and nervous. Past that it's seizures and possibly death. Brain damage is also likely, esp., if you get into bad w/ds repeatedly. Best would be to begin a Valium taper with a physician guiding you and loose the street connections. Sourcing your own benzos is asking for a nightmare situation.
Be smart, don't carry on just b/c you can, some day you'll seriously regret not beginning your taper after you see a physician.
Do not run out of pills until you can see a doc, which should be ASAFP, in your own best interest. If you run out go to the ER within a few hours of your last dose.