O.M.G. Ozzy -- (and Capriciousness) it was almost spooky reading your post(s). It is exactly what I have going on lately! The only difference is that I don't feel like I'm faking it (never do have that fear), but instead feeling like I'm making too much fuss, because it keeps coming back around to generally normal. (And the timeframe is inconsistent, but if pressed would guess that it leans toward the morning and late night being the worst.)
It's frustrating.