Congratulations to @docmom and her son!
I couldn’t disagree more with @wis75’s blithe assertion that now is a good time for him to work on his independence. Now is a good time for him to work on succeeding in his upper level classwork in his new four year school.
As the mother of a 28-year-old who is now returning to a four year school after a long and tortuous path, I know all too well how fragile docmom’s son’s equilibrium might be. He says he wants to be near his parents, who I’m sure have helped him and supported him along this long path. What’s the hurry? He knows what he wants. Don’t push it. Give him the best chance to succeed.
Find a way for parents and son to be close together as he moves along to upper division work. Let him decide when he needs more independence. If he is living close to his parents, but not with his parents, he can be as close or as distant as he needs to be.