I know this is really beside the point, but you are really getting screwed if your bundles don't even weight half a gram. That sounds like how the white kids operate the Heroin market up here in Vermont. The city-folks from my neck of the woods bring up the product and divvy it out to lower level white distributors. It can then change hands several times between different group of white addicts. This is typically how bundles end up weighing .4.
Anyway, the fact that your bags are light could be a blessing in disguise, as you now have less ground to cover in terms of your cessation and withdrawal. I appreciate the fact that you want to taper using only your drug of choice, but I would highly suggest acquiring some basic medications that can help mititgate some of the more severe symptoms and in turn, make your success ultimately more likely.
I will throw out a few medications. Before I give you a ton of explanations and definitions, let me know what you know about these mess.
Gabapnetin (Neurontin) Pregabalin (Lyrica) Clonidine (Catapres) Melatonin (OTC) Loperamide (Immodium) Cannabis
Some of these are obvious and some are more obscure. If you choose to incorporate things like Benzodiazepines, that is your choice, You obviously would be bringing in the potential for more dependence and addiction, but they work like a charm. If I had a choice of any medications and I mean any, I would choose either Gabapentin or Pregabalin over all else.
Get back to me! Send me a private message also, if you would rather go about this in private.