Hi
@Lillian57 and welcome to the forum.
Since you are only 'at risk of diabetes', there's a good chance that a small reduction in carbohydrates will correct your blood glucose to normal.
For Type 2 diabetics, high blood glucose happens because of 2 things: 1. Insulin Resistance (which can sometimes be helped by losing some weight).
2. Eating more carbohydrates than our body can deal with. Carbohydrates include starches as well as sugars, so things to cut down on include Potato, rice, pasta, bread, cakes, biscuits, breakfast cereals, fruit juice and tropical fruit.
Low carb/no carb foods include: meat, fish, eggs, butter, cheese, cauliflower, broccoli, courgettes, leafy green veg, avocado, nuts.