; (B) in providing fellowship awards under this section, shall give priority to individuals who are from groups that are underrepresented in the higher education professoriate, including people of color, and people with disabilities; and (C) may not provide a doctoral fellowship to an otherwise eligible individual— (i) during periods in which such individual is enrolled at an institution of higher education unless such individual is maintaining satisfactory academic progress in, and devoting full-time study or research to, the pursuit of the degree for which the fellowship support was provided