I've started doing something recently that has helped me gain a huge amount of control over my usage of meth, though if you're a daily user this may be less helpful.
Lately when I pick up, it's been half an ounce. When it comes in I separate out 3-4g into a separate baggie. I don't touch ot at all until the remainder is gone. Once that is gone, I switch to exclusively eating It and I taper my dose down over a minimum of two weeks. Any less and the transition is still too rough for me to function on mu day to day life.
My goal was just to be able to use and still be able to keep my job when Ibwas out, but the effect I didn't expect was by exerting that level of control over it, it's made me more able to control my use in general. Smoking is still very compulsive and I think I just need to give u tthe pipe all together but anymore I just don't feel controlled it, I feel like it's just a thing a do? I'm not sure.
Perhaps a similar idea that may work for someone who doesn't plan to have time off is determine how much you feel is a reasonable amount in a day and separating it all into baggies of that weight. It's something so simple, but for me, it works.
Edit:This is all still a new experiemnt, this most recent time I'm doing good but I've been getting so high that I don't feel like doing things. I I need to clean, I've behind on a bunch of things, because I've been ignoring them because I've been so high I just wanna sit at my kitchen table and fuck around on my phone. So my next goal is to reduce my dosage to a point where I can act like I'm not on meth. Though I'm almost trying to come to terms with it's even worth doing at that point. I know I can benefit my life while using, but that benefit may not be worth the effort especially when Adderall does that job. Meth is just more fun lol.