The dosage suggested by your doctor for eczema
involving two fingers only seems to be too high. However, this is my personal discretion. Eczema can be managed with strong potent topical steroids
also. Oral steroids are required only if its refractory, recurrent eczema or an extensive one. If possible send few photographs of involved area or a consult a qualified dermatologist
nearby, so that a proper dose of oral steroid if at all required can be suggested. Take care.