Glad you at least got to see the replacement doc and he actually wrote some rx's for you. Some doctors just aren't very adept at managing their time--and I have the impression that if they're in a group practice, they're sometimes prodded to stay within specified time limits. I've noticed that some doctors I go to have my appointments scheduled to last 15 or 20 or 30 minutes, all set up in advance, and they seem to stick to that. I suspect that most group practices work that way, to make sure that each doctor is seeing a certain number of patients each day and not getting behind. The doc you saw may have problems with the office management if he's spending so much time on each patient. Two hours seems more than would be called for usually.

Ideally he should have read up on your file before he was face to face with you.

Waiting till June till you can see him again to straighten out the dosage sounds difficult. Maybe you can make arrangements to be on a wait list so they'll notify you if there's a cancellation so you can see him sooner. Or maybe you can reach him by phone with your question, and it can be straightened out by phone?