I Just Started A Methylprednisolone Dose Pack For My Seasonal

I just started a methylprednisolone dose pack for my seasonal allergies. I am on my second day and am extremely tired (could not sleep last night) and had an excessively upset stomach this morning. My allergies seem to be significantly better but the side effects seem to be just as bad as the allergies themselves. Can I decrease the amount I am scheduled to take or even quit taking this medicine?