What steroid durations do you use for the treatment of acute, chronic, and drug-induced eosinophilic pneumonia?

For acute eosinophilic pneumonia, these are often high doses of IV methyl prednisone in the hospital, and assuming that the exposure or risk is mitigated, I would taper these down over a short period of time after discharge. Chronic eosinophilic pneumonia, I treat briefly with steroids but quickly t...