https://www.engin.umich.edu/admissions/undergrad/cross-campus-students/
Just read my mind. The first year engineering prerequisite are all taken with general population. So physics 1 is taken with all the medical, engineering and physics kids etc and so on. There is just one class you won’t get and it doesn’t matter. You will take a different first year English also. The basic courses are tough even for the most accomplish student. He will know after first semester if this is the correct avenue to pursue.