Prednisone vs dexamethasone for IBD / need advise

[Nina]

Hello Everyone,
I've posted before about my "feral turned house cat" Gypsy.  We suspect 
she has Inflammatory Bowel Disease, (fecal tests showed no parasites or 
Giardia).  The only vet that she's seen is not my favorite.  He's kind 
of old school and is pretty annoyed at me for being so involved in her 
treatment.  Because Gypsy can't be pilled, or given shots, I have to 
have something compounded into a liquid to mix in her food.  When I 
asked my vet which tasted better, Prednisone or Dexamethasone, he 
thought Dex might.  When I called my compound pharmacy, they told me to 
go with the Pred instead.  I guess I should have looked up dosage before 
I had my vet write the script for Pred, because Dex is recommended at 
.22 mg/kg/day initially and Pred at 2.2 mg/kg/day.  It seems to me that 
getting a smaller dose of something down her might be easier than the 
larger dose, even if it tastes worse.  I hate having to call the vet 
back and beg him to change his script.  Do you think I should order the 
Pred and cross my fingers that she'll eat it?  The poor little thing has 
been battling chronic diarrhea for so long, I just want to get her some 
relief before she dies from malnutrition.
Thanks,
Nina