Aside from the carbs, 4 slices of bread is quite a whack of calories, especially when filled with cheese or buttered. It is worth bearing in mind that no matter what diet you embark on, some brake on food intake is necessary, though many find on the LCHF diet that this happens naturally with a return to more " normal" eating levels without the drive to eat that carbs raises in many of us. If you can't drop it all at once, then consider an open sandwich at lunch with just one slice of something like a Burgen bread piled high with salad leaves and the like, then some ham or tuna and a drizzle of homemade french dressing. Breakfast I would try and ditch bread altogether and have bacon and a poached egg if time allows, or some berries and greek yogurt. It is worth keeping an eye on the fats you add to food imho- although the LCHF advocates no restriction on the likes of cream and butter etc, they are highly calorific and if you have cholesterol issues other LC proponents suggest scaling back on these and using olive oil and not adding the likes of coconut oil and butter to coffee as in the bulletproof coffee. Similarly, fruit is not that healthy and is best thought of as an occasional treat , chosen with an eye on the meter readings. The book Carbs and Cals as mentioned is very useful for seeing what you get for your carb dollar and calorie buck. Although the five a day and now 7 a day advice includes fruit, a friend of mine knew someone involved in its formulation and actually it should be nearer 10 a day, but only one or two should be fruit, but this was deemed unlikely to be taken on board. I would suggest that you get that book or the app then get used to filling plate with a variety of low carb veg or salad alongside whatever main dish you have and drinking plenty of water as this helps weight loss and often we are thirsty and not hungry.