if the Secretary determines necessary. (5) The child care center shall provide drop-in infant and toddler child care for community college and minority-serving institution student parents and may not impose minimum enrollment requirements for children of community college or minority-serving institution student parents. The Secretary shall promulgate regulations that specify the percentage of infant and toddler child care slots that must be reserved for drop-in infant and toddler child care under this paragraph. (6) The child care center— (A) shall provide infant and toddler child care for children under the age of 3 (as of the first day of the academic year of the community college or minority-serving institution supporting the child care center) of community college and minority-serving institution student parents for free