Hello,
Yes, carbs are the enemy I'm afraid, and especially the starchy ones. You have been given the normal poor NHS dietary advice that may well be fine for non-diabetics, but is certainly not fine for type 2's. The fewer carbs you eat at any time, the better. Make up the lost energy with increased fats and protein, and lots of leafy green veg and salads. This is especially important in the mornings when our insulin resistance is at its worst. It improves as the day progresses.
The worst culprits are bread (of any sort), potatoes, rice, pasta and cereals. We also need to be careful with fruit and milk.
A good and filling breakfast is a full fat Greek yogurt with a few berries added for sweetness (and I mean a few). Maybe a coffee with a couple of spoons of double cream. That will keep you going till lunch time. No need for snacks. Alternatively, a cooked breakfast. Eggs cooked any which way, bacon, tomato, mushrooms.