Hi mate, yes I can help!
First of all, you have my deepest of sympathies... and optimism! I've been there and actually recovered pretty fast, with no noticeable long term effects; bar a few grand mal seizures to my name due entirely to my own foolishness i.e taking my last dose and not being able to get more/forgetting to dose/etc. People who haven't been lost in the benzo powder thing (and even those who have) often seem to baulk at the ridiculously excessive tolerance that can be
rapidly accrued. It seems that once you reach a certain point, things don't move in a linear pattern any more, and your normal/active dose increases exponentially. Once this starts, supply/money eventually becomes your bottleneck, and this can actually work in your favour, because it's literally unsustainable to afford say a street/pill benzo addiction.
Your tolerance can lower back to a more traditional/conservative level (and this is the most crucial element of the solution I'm about to offer), but it
will rapidly return to exactly where it was at a rate never previously imagined if you take benzos on an anywhere near frequent/reckless basis, for even a few days or weeks.
We will need to know your current usage rates i.e dosage/dose frequency/etc. If you aren't already, you should start logging dose, time and date on your phone/whatever.
The way that I personally tapered off a high dose was to wait 2-3 (it's best to think of it in terms of 48/72 hours, because accuracy is crucial) days without dosing, and my tolerance would drop a bit. There was a huge problem here in that at around the 72 hour point I would have a grand mal seizure, usually within 1-4~ hours; so I would have to dose as soon as I woke up. This is incredibly dangerous (and differs for everyone), and if you can wait less time (say maybe 48 hours?), this will help. Three days is very tight, probably way too tight; but it's what I personally had to do to lower my tolerance by a significant amount.
If you're anything like me, re-dosing outside of your maintenance schedule within 48 hours will just fuck the whole thing up and increase your tolerance even further. You need to dose only to prevent serious withdrawals/seizures). FTR the tell tale signs of seizures for me were always brain zaps and body jolts/involuntary movements.
Once my tolerance was lowered slightly, I could drop my dose a bit, and take an active dose, on the low end (i.e don't get too fucked up; you'll probably take more). I used to aim for what I called a 'maintenance dose' i.e just enough to prevent withdrawals/feeling shitty/having seizures; probably equivalent to around 1mg for me without tolerance, or half of my 'preferred' dose (2mg). Obviously the doses I was talking were far in excess of 1-2mg, and it's the same for you, so I just had to kind of work out the relative doses for myself, and refer to the logs I kept in a notepad file on my phone.
You should be able to lower your dose more rapidly than a person who is tapering off of say 2-3mg etizolam, because your tolerance means that the ratio your body recognises benzos at is totally skewered. You need to find out how much you can lower by via trial and error, but if you wait two days then you might be able to lower by say 2-5mg, maybe less, maybe more. Swilows estimate of about 10% sounds about right to me, and is roughly how much I lowered by. Once you get to more traditional levels of benzo use you should begin to taper by the amounts that other people do, and your powder will go a lot further, so you can hopefully do a long taper. Just bare in mind that you might be inclined to start upping your use again, but like I say, your tolerance will literally start jumping back to where it was... and you may well quite suddenly find yourself in a situation whereby you have an ineffective dose left and you know you're screwed.
How old are you? And which country? Once you are down to traditional levels you might want to consult your GP for a long term taper of diazepam/clonazepam. There is no need to experience significant withdrawals or long term effects if you do a long taper, once your dosing stabilises to traditional levels. It can also help to have a neutral (none drug taking) friend/relative administer your doses.
Oh and one more thing, I'm not sure how you're dosing but doing so accurately is imperative for this. You should be using volumetric dosing, with propylene glycol or similar. It's really easy and important, because you can't accurately reduce by milligram amounts via guessing/weighing.
Hopefully that helps/makes sense. If you need any help, just ask.