PredniSONE and hard to breath

My 7 year old female Siberian Husky, Niceah is suffering with her second serious flare-up of IBD. She was taking 20 mgs. of prednisone every 12 hours for several days. We are now down to 12 mgs. daily and working towards 12mgs. every other day. She is lethargic and her body and belly have swollen frightfully to the point where it is difficult for her to lie down without grunting and sighing. She pants heavily. She drinks and eats constantly. Her nose is dry. Her tummy grumbles all day and night. I have been boiling chicken breast and mixing it with sweet potato and Enzymes & Probiotics. I am currently working with a holistic advisor concerning Niceah's diet once she has weened off the prednisone. The side effects of this drug are frightening and I am so worried that something more permanent and damaging will occur. Has anybody experienced this?? If so, I would appreciate any advise. Robin. copher370@aol.com