Relax, He is a freshman. He is still learning the college game. He has been in some games and has done ok. Looks pretty normal for a D1 freshman they expect many more innings IN THE FUTURE.
Pitches he got away with in HS sometimes don't fly (or really do) in college. Moves he made in HS may not have attracted attention, but become balks in college and beyond.
I do suggest he go talk to the coaches and ask, but something tells me he knows the answer.
Still it is his and his family's decision as to whether or not it is time to move on. I had one son to move due to a coach moving him from a overhand high 80's low 90's mid week starter his first year 5-1 1.12 era, to a sidearm/underhand set up guy the following fall. So I do feel your pain.