How hard to maintain a 3.5 GPA for the first year as General Engineering?

Texas A&M has grade distributions by course (see http://web-as.tamu.edu/gradereport/ ), so you can look up what percentage of students in the general engineering courses (listed at https://engineering.tamu.edu/academics/entry-to-a-major/general-engineering-program/class-of-2021.html ) earn A grades.