I also live 4 hours away from my dr. and I'm sorry that you're going through a difficult time. so they can't get you in for 6 weeks, frustrating I know but you just have to schedule your appointment, eat right until then (remember this is a lifestyle change anyway) when your there hopefully they will give you just what you need but if the dr. chooses to be tough and start with a small fill then be tough too, go home eat right and return for another fill. You know you don't have a useless piece of plastic inside you because it has worked for you, and I'm sure it won't have been the first time you've had to jump through some hoops for a dr. we all have too.
this is just a bad day and when you think about it you'll see what you need to do and you'll feel better!
take care and love yourself