The blood sugar diet book mentioned above is great.
My dad was diagnosed Type 2 a few years ago, he probably had it for years beforehand as he was nearly blind by the time he went to a doctor.
My mum helped him research and read book after book and followed Michael Moseley's diet plan and they both lost a huge amount of weight and have been the happiest and healthiest they've been in years. Being diagnosed with diabetes was the best thing that ever happened to my dad, as weird as it sounds.
His mood improved dramatically, my mother said he was like the man she married again (30 odd years later!) and he stopped needing glasses to read the paper, which he's done as long as I can remember.
Last year he went for his checkup and his doctor said he had reversed his diabetes. His levels were so good he doesn't need to be on medication anymore. He was so proud when he went to his pharmacist and only asked for cholesterol medication and not metformin, the pharmacist thought he had lost part of his prescription.
They still follow a low carb/low sugar lifestyle and are in the prime of their lives, it's not the millstone it once used to be.
Good luck with your appointment. 