Spoke with my neurologist this morning. Since I did have a few hours on Saturday without a migraine, my neurologist believes that the Prednisone may have done some good at the highest dose, but that the taper was too quick. So I'm now back to 3 days of 60mg of Prednisone and a slower taper off of it.
According to my pharmacist husband, 60mg is not an insignificant dosage. It means nothing to me, other than a whole lot of heartburn. Literally. Yuck.