Yeah, I get that. I'm not into uppers at all, in fact I usually hate them, but I still want to try coke for the experience lol. Weed was anxiety inducing at first, then it got really introspective for me and I got used to that so now it's just really chill, but if its just going to make your anxiety worse you obviously don't want that during wd. Though I will say, it helped with the nausea a LOT. Have you tried kava tea? It's really cheap and available at grocery stores (sometimes in the natural section) and was nice for anxiety during withdrawal. All in all though, it hopefully won't be too bad considering you haven't been using for long.
But yeah as for tolerance, I think we're pretty much fucked there. A month long break was sufficient to avoid going into withdrawal after using one night, but my tolerance is definitely still there.
I wouldn't go as far as to say I hate uppers, I'm just not a fan of them. As in if I'm offered them for free I'd take them, moreso for motivation or studying than recreationally, but I won't specifically seek them out. I bought a gram of coke not long ago for the same reason as you, the experience, and coke is the one upper I thoroughly enjoyed recreationally. Especially if you do it with a friend/friends (a friend and I were both looking to try it for the experience, but he has only ever smoked weed so I picked some up and we did it together at one point) it also makes for a very nice social drug. Being a downers person I didn't find it addictive at all, nor did I find it fiendish or feel compelled to do line after line after line. I didn't even get any comedown or withdrawal effect from it, it just kind of wore off, so all in all I'd say it was a pretty nice drug and an overall very enjoyable experience, it just isn't worth the money in my opinion. Also on coke try playing a game of darts, accuracy/precision were on point for both me and my friend it was amazing.
I'm kind of the opposite of you, I used to smoke weed daily and never really got much anxiety from it. At some point though, and I'm not sure when, something changed that made it almost always induce some anxiety, sometimes minor sometimes major, and I stopped smoking often. In fact I smoke so little now I'd say it's maybe once a month max, if even that. Usually I only smoke when there's nothing else around, I'll typically choose drinking over smoking (not a huge fan of drinking either but it gets the job done haha). Now that I've discovered a variety downers though I also find it more convenient to be able to just pop a couple pills for an enjoyable high or inject some H. Fast, easy, convenient, more enjoyable, and no intense smell.
As for withdrawals, I'm really
really hoping I don't get them at all or at the very least they're very minor since I only started b using again for a short time, but it was also a lot and IV'd. Surprisingly I don't, or at least haven't, experienced any anxiety while withdrawing. I just get major insomnia to the point where I once smoked half a gram of weed and got wasted and still layed in bed the entire night just high/drunk without getting even an hour of sleep (which was just...so indescribably terrible). Luckily I have Etizolam for that though, which works wonders, and if by chance I do experience anxiety I find that Etizolam in smaller doses also works wonders as an anxiolytic. I have tried Kava a couple times. The effects were minor, yet sedating and nice. The taste is definitely unsatisfactory though haha. For the nausea I have zofran, a prescription miracle-drug that prevents pretty much all nausea.
I feel for ya man, after a month clean my tolerance did go down, but only very slightly. Luckily when I fell off the wagon I started with Oxycodone, with which it had been a much longer time since I'd taken that, so my tolerance was down quite a decent amount since I'd only been using H for a while (and while all opiates are cross-tolerant, they aren't proportionally/exactly cross-tolerant if you know what I mean. Something to do with what chemical the particular opiate metabolizes into once it enters your system I believe). Tolerance to Heroin dropped an extremely minute amount though, and rose back to what it was and above very quickly.