Hi Jill and welcome,
It is carbs that cause high blood sugars I'm afraid, not fat. All carbs turn to glucose once in the system, some quickly and others more slowly, but the same result in the end. Losing weight by reducing carb intake will help you a lot. However, you need to replace some of those lost calories (energy) by increasing fat and/or protein. I ditched all my low fat products in favour of the real thing. Do you read the food labels? Most low fat products are high in carbs and sugar, so be very careful. Fats have no impact on blood sugar at all, so as a diabetic you can eat good fats freely (unless you have some other medical condition that makes this unwise). As for weight loss, it is carbs that make you fat, not fat products. I believe if you ditch the low fat meals and replace with good fats you will start to lose weight. I know I did. I have lost 2stones 3lbs since February and am eating lovely fry-ups, full fat Greek yogurt, butter etc. but only up to 80g carbs a day.