An apparatus may be configured to: upon feeding a sheet by a roller, wait for a sheet waiting interval before feeding a next sheet by the roller, determine, using a sensor downstream from the roller in a sheet feeding path, a sensed sheet interval between at least two of the fed sheets; determine whether the sensed sheet interval is equal to or greater than a reference value; and in response to determining that the sensed sheet interval is equal to or greater than the reference value, reduce the sheet feed waiting interval for subsequent feeding of at least one sheet.