An audiology student who is enrolled full-time as a 4th-year doctoral student at a university and has completed 375 clinical training hours with 100 percent direct on-site supervision may utilize the following schedule as a minimum for supervision: For 3 months or the first 1/3 of the 4th year of clinical work, whichever is longer — 90 percent on-site supervision; For 3 months or the second 1/3 of the 4th year of clinical work, whichever is longer — 75 percent on-site supervision; and For 3 months or the last 1/3 of the 4th year of clinical work, whichever is longer — 50 percent on-site supervision. A supervisor shall be available either on site or by telephone for consultation at all times. An audiology student who is enrolled full-time as a fourth year doctoral student at a university and holds a hearing aid dispenser license shall follow the requirements of §A of this regulation while working toward the degree.