As usual
@Leadinglights offers excellent food advice. Most cereals, including Weetabix are high in carbs, so I tend to go for a grilled breakfast like bacon, mushrooms, tomatoes and poached egg - occasionally a small slice of wholegrain bread, or 80gm berries and full fat Greek yogurt. Lunch is usually home made soup (you don't know what goes into the shop bought ones), or a salad with protein and a light dressing (no made up shop salads like potato salad or coleslaw). But an open sandwich with lots of salad vegetables (just one slice) would be fine.
I don't have any spread if I have something wet, like tomato, egg, or a few baked beans (reduced sugar and salt) on the bread. I have to totally avoid rice and pasta, but occasionally have 2 small new potatoes plus I have a lot of cauliflower or roasted squash or sweet potato as a potato substitute. I mainly stick to berries or melon, as apples, pears and bananas are lethal for me. I keep digital scales and a clear bowl on my kitchen top, so I can weigh my portions easily - no guessing. Also I record everything on an app, so I know my carbs by meal and by day. It's less fuss than pen and paper, and you can take it round the supermarket!
Todays menu was fairly typical: grilled bacon, mushrooms, poached egg and a small slice of bread; mackerel salad; grilled pork chop with roasted Mediterranean veggies; 80 gm plums with a dessertspoon of full fat Greek yogurt. With my daily milk, it came to 90gm carbs. Tomorrow is my 10am Aquafit class, so I'll have a lighter breakfast, of an egg on small toast, then home made chickestrone soup (minestrone but with chicken instead of pasta) for lunch. I've got a fresh tuna steak which I'll probably have with cauliflower and mixed green veggies.
I hope these posts have given you some ideas but there is a section on the forum for food and recipes as well.