Your son is a '24, right? Why think about PG now? No need for a PG year if he's looking at D2, D3, NAIA, juco, etc., they recruit summer before senior year, which is coming up. Find a spot at a school that is right for him.
If he's aiming for D1, why is the answer not juco? I think your son is not a pitcher, so he'd have to show he could hit college pitching.