First, I've never had to personally deal with this disease, so much of what I'm about to say is anecdotal. My recollection is that swim bladder disease is one of those fish diseases which is usually a reflection of some other underlying pathological condition...such as a bacterial or parasitic infection, etc. Since these two conditions are relatively easy to treat, if it was my fish. I would begin to administer combination therapy, consisting of a broad-spectrum antibiotic, coupled with an antiparasitic medication. I would give this a few days and see if there is any change. Also, I'm not sure if raising the temperature is actually a good idea. It seems to me that if your fish is stressed, then lowering its metabolic demands by dropping the temp a few degrees is the best course of action, coupled with strong aeration. Finally, was your fish defecating normally just prior to the onset of this disease? Since your fish is apparently fat, that means it has a lot of stored fat an can easily survivie off this for several weeks, if necessary.
