Only for GPA. (A minimum 3.0 cumulative University of Arizona GPA is always required at the end of all of your future academic years.) As long as you completed a minimum of 27 graded University of Arizona units by spring/summer 2021 or you were within the 3-unit deficit of your cumulative unit requirement, you were not required to “make up” the difference in units during future years. In other words, a sophomore who completed 30 units their first year and 27 units during 2020-2021 would have needed to have at least 87 completed University of Arizona units at the end of the 2022-23 academic year.
Please keep in mind that while you don’t have to “make-up” any units to maintain your merit-based tuition scholarship, the scholarship is still only renewable for up to 8 consecutive semesters (or 4 consecutive semesters for transfer students) and if you complete less than 30 units per academic year, you may be delaying your graduation past the four years, at which time the merit-based tuition scholarship will expire.