Dude this guy is running you through the ringer. If a doc won't let you self medicate find another. He's just doing it to get your $$.
Hell I got a prescription right off the bat for 1CC per week, self injection. If they made me go in every week I would say f it.
Did you ask him for a script? I would try it. Just be honest, tell him you can't afford it and you ain't got the time. 30 seconds and you can pin yourself.