Sons first college year he pitched 70 innings. It was decided that with that count he would take the summer off. That was a discussion and decision that he had with his college PC.
Going into his junior (draft year) summer, a starter, relieved and as I remember not as many innings. Usually they reverse, a college closer may get in as a starter, vice versa. Mine went to the cape and there was communication between the program and pcoach, as it should be.
When he returned for junior fall, due to expected work load, he didn't pitch in the fall but did have instruction (which is continuous).
Teams have team doctors so if there is an issue they will see the him.