Nurses and GPs mostly have no understanding of the power of self testing and unfortunately, the NHS doesn't have the funds to finance it for every Type 2, so of course they don't recommend it, but if you read some of the success stories here on the forum you will find that the majority of people find testing an invaluable tool in managing their diabetes well and in many cases, pushing it into remission. It can help to discourage you from eating the not so good foods when you see what they do to your levels but also encourage you to keep going when you make changes and start to see good results.
Which cereal do you have for breakfast?
Do you like skimmed milk? I ask this because if not, full fat milk may be better for your diabetes and more enjoyable.
Unfortunately the NHS advice is to go low fat and eat moderate wholegrain carbs but this is not helpful advice for many Type 2 diabetics. Wholemeal/wholegrain carbs (ie wholemeal bread, pasta, brown rice, sweet potato, etc) contain only marginally less carbs than the white versions and your body often doesn't care if they are brown or not and breaks them down in the same way, resulting in your levels increasing. Added to that, fat helps you to feel satisfied and therefore reduces hunger, so eating less carbs and more fat means that your BG levels will be lower and more stable and you won't feel hungry 2 hours after a meal and be looking for a snack.
Many of us find that creamy Greek style natural yoghurt (not low fat but full fat) with a few berries which are the lowest carb fruits (tartier fruits have less carbs than sweeter ones and our native berries tend to be pretty low carb, so raspberries and blackberries and blackcurrants and a few blueberries and some mixed seeds and perhaps chopped nuts, works well as a low carb start to the day. Interestingly a full English breakfast is also lower carb than a bowl of cereal, provided you don't have baked bean, toast/bread or hash browns with it. I am not advocating a full English every day, but once in a while as a treat, it is a nice low carb option.
Cereals are about 60% carbs which is a lot. If you have 50g of cereal, that is 35g carbs. Eggs, bacon, mushrooms and a link of high meat content sausage contain almost no carbs at all. Full fat Greek natural yoghurt is about 5% carbs and a few berries are about 5% carbs, so if you have 100g yoghurt and 100g berries, that is about 10g carbs. That means a breakfast of yoghurt with berries is more than 2 thirds less carbs than your cereal, so that is a very significant reduction just in that one meal.
You really need to learn to read food labels and in particular the Nutritional info on the back or side of packets, not the traffic light system on the front which is not much help to us diabetics.