Get hold of your doctor for advice as soon as you can before the inflammation settles in. Some doctors say to take a higher dose for a few days or a week before starting a quicker reduction that must be done within two weeks, after which time the reductions have to be done more slowly again to avoid prednisone withdrawal, so you don't want to go higher than you need to. One day of a higher dose will not fix a flare. Does your doctor have another doctor they work with who can advise you instead?