Thankfully my DN understands that lowering carbs actually gets results, she was encouraging me to eat eggs for breakfast and the like 15 years ago. In my annual review she'll say "do you want to see a dietician?" whilst shaking her head, I think she's obligated to offer it to me once a year, but knows I won't take it. I saw one once 23 years ago and didn't think much of her then - the black and white line drawing of a balanced plate she showed me then already had more carbs and less veggies in it than I was eating before diagnosis, so we fell out over her idea that I should increase carbs - that was nonsense to me even then.
I think my practice are more enlightened than most, I remember discussing the details of a Mediterranean diet with my doc 20 years ago - leaves, olive oil, fish etc. and not to eat veggies that grow underground. We discussed recently the inadequacy of the NICE recommendations.
When I started on insulin I got a leaflet and in there is a diagram to show how insulin works and there are three meals - breakfast is 2 weetabix in milk, lunch is a brown bread sarny and an apple and dinner is meat with new potatoes, peas and a glass of orange juice.