Hi Mick
You most likely would be looking to reduce the carbohydrates in your diet until your BGs come down to n acceptable level. You can look on this forum for info on what foods contain carbs that cause big fluctuations and take you our of the range that is considered safe and not likely to cause damage to your organs. For me is bread, cereals, rice, potatoes, root vegetables, fruit, yoghurt,sugar... I now eat plenty of green vegetables, meat, fish, eggs, berries, nuts and seeds. Plenty of planning and a pantry full of satisfying foods and life is good.
Alison