If you’re concerned about the course load, then I’d counsel him about being judicious with his choices amongst the other college activities, such as attending sporting events and joining frats and the 1,000+ clubs available, which I think takes place after the 1st two weeks (or so) of the Fall semester.
Those other non-academic activities do “burn” a student’s time at college. But OTOH, those activities can bring “richness” to a student’s college experience too.