The plan my dietician gave me is below, I’m confident with adjusting insulin doses based on bgs and carb intake so it was fine for me to adjust carbs like this, obviously you’d need to make your own decisions.
Her basic suggestion was to reduce / cut out fats (I didn’t eat much of these anyway) especially saturated fat, so low fat cheese, milk, mince, using chicken or vegetarian sausages instead of pork ones, spray oil not pour. Then also to halve portions of carbs at meals and replace these with extra vegetables. For snacks, I was told to aim for 2 a day and 100 calories or less each but ideally lower carb fruits like berries, jelly, veg sticks, a rice cake with light cream cheese, low fat yoghurt, dark chocolate up to 100 calories etc.
So my meal plan (bear in mind this is based on my previous diet with adjustments) is something like
Breakfast: 1 slice toast with low fat spread and either a protein, a veg or a fruit
Lunch: sandwich on 1 slice bread (protein and veg filling), with a small salad and a protein on top, and a fruit (eg strawberries, melon, other berries, or satsuma)
Snack: fruit, or veg sticks, or rice cake with light soft cheese
Dinner: Normal meals but half the pack suggested portions for things like pasta and rice, and extra veg.
Snack: anything of about 100 calories or less, often have dark chocolate but bgs have needed toast a few times lately
What do you eat at the moment? The diet plan dietician gave me was based on current diet with some adjustments. If you can share what you eat now (an honest summary, we won’t judge) then can help with some suggestions