Breakfast is corn flakes and fruit ( melon, berries)
Lunch is meat or cheese ( usually meat) with bread, crackers or a wrap. Bread is, usually, home made.
Evening meal is a Slimming world home made meal eg, turkey meatballs,in tomato sauce, with pasta. Always low fat and not a huge amount of carbohydrates.
Supper is a small packet of crisps or crackers and cheese. Bit of fruit and a couple of dates.
May I suggest your diet is very carb heavy and not helping your diabetes at all. Cornflakes are FULL of sugar in addition to the cereal content. Have a look at the total carbs on the box, and then you have to add on the fruit (and milk?). Bread is very carb heavy as are crackers and wraps. Pasta is one of the main culprits in raising be levels, and the tomato sauce may. not help. Your suppers are not at all suitable - crisps, crackers, fruit and dates.
Being very blunt, I am not at all surprised your levels have crept up. Your diet is not good and if you want to control your levels you need a total rethink.
Do start testing before each meal and again 2 hours after first bite. Look at the rise from before to after. If this is more than 2mmol/l and preferably a lot less, there were too many carbs for your body to process.
Try bacon and egg for breakfast, eat meat and fish, especially oily fish, cheese, all dairy (not low fat alternatives), plenty of green veg, mushrooms, a tomato and salads. AvoidAor seriously reduce cereals, potatoes, rice, pasta, pastry and bread plus many fruits. Berries are best if eaten with cream or full fat yogurts.