I've started taking Adderall in the last 2 months and overall, it's really helping me! BUT there are still a handful of days where it seems like it isn't doing anything (or maybe doing too much? I can't quite tell the difference). I thought it could have to do with getting too much caffeine, but it also seems to happen if I don't get enough sleep?? Have you noticed anything specific that makes the meds just NOT work for you? what do you do on those days?