Can i do my own physical therapy for my knee?

my bf is a pro skater and tor his acl. he got surgery and now his doctor is telling him he needs physical therapy obviously... anyways... we live in CA and he'd have to move to AZ for 6 months to do the physical therapy. is there any way i could be his "physical therapist" what do they do? i know its just making the knee stronger, anyone had physical therapy? could u tell me what u did?