I’m sorry your nutritionist wasnt helpful. Perhaps you can find another one. If you find the right one, it could be extremely helpful. Mine has been imperative in helping me understand what to eat to stay in good control.
Are you eating 100% whole grains? Pair those with protein or fats to help minimize blood sugar spikes. I also ate other foods with low glycemic index such as strawberries, raspberries and blackberries. I got a cheap food scale and measured everything so I knew exactly how much insulin to take.
For breakfast you could eat oatmeal (try oat revolution classic flavor) with some nuts and cinnamon or strawberries and cottage cheese or whole wheat toast with peanut butter or eggs or avocado etc. For lunch, sandwich with whole wheat bread or flatbread, salad with black beans or chick peas as carbs. For dinner, whole wheat pasta or brown rice with protein and veggies. For snacks, late July chips or sun chips, popcorn, fresh berries and nuts, KIND bars, full fat siggi’s yogurt, hummus and veggies.For dessert at night, Haagen dazs ice cream (high fat content causes slower absorption of sugar and minimal blood sugar spikes).
Also when are you taking your bolus in relation to when you eat? If you can, take it 10-20 min before you eat to give the insulin time to kick in.