Well put it this way, 0.1g is jack all if u have some tolerance unless the gear is pretty pure, but I doubt it by the sounds of things.To me it sounds as though U have developed some tolerance by some okeyish stuff, I in the past have mostly been a smoker but do have the marks from injecting,been on H for over 16yrs now with a methadone scrip, and all I can say is tolerance is a pain in da ass.
For example in the past i have Iv'd,.2g and only felt it ever so slightly, so next time I smoked it all same batch and felt it more from tooting, or smoking it, dunno if its all about it being the Afghan no3 H around here, or my tolerance,but it seems pretty bazaar me feeling more of a nod,from smoking the stuff.
If U aren't on any Medication ie, Methadone then having days without is good i means U still have not developed a habit which isn't what U want, but can not understand why U are injecting in the first place unless U need the desire for that hit it once gave you from just smoking it, or snorting it.
Ppl normally develop into Iving if they cant feel the hit no more from other methods of ingesting the H, ie smoking, or snorting, plugging etc,.If U are going to smoke the stuff any less that .2g would be point less U do use alot more when U smoke it and is more expensive but the euphoria lasts alot longer, they say its safer to do so so its your call.Personally I love smoking the stuff and the more the better on the foil.But there's no reason to be digging the stuff if u aren't so desperate, if U got 8 bags split it into 2 lots 4 bags a peace, and stick 3 on some foil and once u half way through smoking it stick the other 1 on to bulk the beetle up from getting small, its a much more pleasurable way costs more but lasts alot longer and is safer.Iving sometimes I find its done way to quickly, but each to their own.
If snorting .1g and having no effect then I wouldn't do more, it would only irritate your nose even more, so I would smoke .3g at least and see how u feel.Having more time apart will be beneficial in getting your desired hit, the longer apart the better, but if injecting without a tolerance be very careful. Without a tolerance and if the gear is good, smoking , and snorting should be enough.