Sorry but stockpiles and addicts do not go together at all
Can't tell you how many times I thought "I won't do it all and that I would save some that way I'll have a last resort just in case the need arises".... let me just say that need or preceived need is one idea in the back of your mind away, or one bad day away or hell for no reason at all away.... it just dosent work like that, it's kinda just like a Siren calling you and it's absolutely impossible fight, you will do what it wants and asks
If you want to completely stop using you must have zero of your drug of choice on hand, it's hard enough when you don't but know you could go get\find some eventually. Let alone if it was two feet away, I will venture to say that would never ever work, at least not in my world
Reason being that drug additics have absolutely zero self control when it comes to their drug of choice, that's why we ended up where we have, NOT because we are actually capable of making reasonable and not compulsive decisions time and time again .... just for starters
What ever you do I hope it works and just trying to help you realize now that it is a bad idea if your end goal is to stop using for good... cause the addict in me can thinks why give up extra drugs, but then the rational human in me knows it's a bad idea and it's a recipe for something you probably don't want to eat, no matter how hard you try to choke it down.
I know more about physical pain than most forsure, and while I know there is some things than only meds can help at the same time I can't deny the fact that much pain is partially or fully psychologically based, and we tell ourselves that its way worse than reality actually is, and sometimes touching base with that reality it very very hard. But the sooner we can actually completely realize this fact the sooner we can be helped....