Every residential health facility must at all times provide nutrition and dietetics staffing adequate to meet the care needs of each resident. The staffing level must, at a minimum, include a full-time food service manager. Any food service manager hired after July 1, 2001, must be a registered dietitian or a certified dietitian/nutritionist, a registered dietetic technician, a certified dietary manager, or must have a Bachelor of Science or associate degree in food service management or related field. The educational requirements shall be met provided that if an insufficient pool of applicants exists, other qualifications may be deemed acceptable in accordance with regulations promulgated by the Department. A sub-acute transitional care unit of an acute care hospital with 30 beds or fewer is exempt from the provisions of this subsection provided that other licensed personnel perform the duties of this function. Any full-time food service manager with a minimum of 3 years' experience as a full-time food service manager as of July 1, 2001, shall be exempt from the requirements of this subsection.