How can I reduce the side effects of Prednisone?

I have been taking high doses (100mg+) of Prednisone of the past 2 months and have been tapered down to 60 mg. I have the typical moon face and bloating as well as lots of crazy adrenal stuff (hot/cold, tired/awake, happy/sad, etc) and would like to reduce these symptoms. Can I do anything with diet (drink tons of water, take vitamins, etc) to reduce these side effects? How long after I get down to a better dose (let's say 30 mg daily) will I start to look and feel more normal?