I am prescribed to take adderall IR three times a day but I feel as if over time of everyday use, it gets less and less effective, peaking at 20 mins. and lasting maybe an hour and giving me worse comedowns where I really cannot focus on anything or anyone that's talking. I started to just use it every other day and that actually helps a lot. It lasts about all day and I can still function throughout my comedown. Is this okay to do? My doctor originally told me I have to use it everyday at the same time but it's messing me up as I continue to use it everyday...