I don't know for sure, BNLsMOM, as I've never gone off it,
but at 25mg a day, it doesn't seem like it would be so bad, even at cold turkey. Of course you and your Pdoc would be making the cold turkey decision, but it sounds like it's already been made, so I'm assuming that they think it will be ok too. Also, at a guess, if you've already gone off that dosage level before, seems it would be no worse... pretty sure the dosage levels in your body would have already been pretty similar in the original week's time, so... don't imagine this would be different.
(I started with the same dosage schedule as you and am now on 400mg (split am/pm, as taking it all at once caused vision problems and dizziness, but splitting it am/pm works absolutely fine. Now if
I had to go off fast from 400mg, yeah, I'd be worried. Not sure they'd even let me(!))
Sorry you seem to be having an allergic reaction to it. Keep us posted how it goes for you, ok?