Our kid was moving for professional school when she aged out of our policy. So…she got a plan on the exchange just before she left. Then once she established residency in her new state, she got a new plan on the exchange in that state. Then in January that followed, she got yet a third plan because the plan she got was discontinued🤦🏻♀️
But she had coverage and that’s what mattered.
It sounds like your son’s need for coverage will be short term because he will be going to grad school where he will get coverage. I’d just go for a policy on the exchange.