Hi
@KevP and welcome to the forum
Don't beat yourself up about a Type 2 Diabetes diagnosis. Many people who have stuck to the government health guidelines get it (including me). In fact I blame those 'healthy eating guidelines for me getting T2 D in the first place.
All carbohydrates turn into glucose (sugar) when digested. Nobody disputes this, yet we are urged to eat more and more whole grains , fruit, and veg (such as carrots) which contain carbohydrates and less meat and fat. Certainly once diagnosed as Type 2 we should do our utmost to slow the flow of glucose and other sugars into our bodies down from a fast stream to a trickle.
There are only 3 macro-nutrients and only 2 of them are essential and those two are protein and fats. So cut the carbs down and eat more meat, fish, eggs, cheese, full fat dairy, nuts seed and low carb veg (mainly above ground and leafy green veg).
Find out what your HbA1C test result (the blood test used to diagnose T2 Diabetes) was so that you know how far into the diabetic range you are. If it's below 60 then perhaps a few simple food substitutions will do the trick. Note that in more than 50% of cases, eating a Low Carb way not only puts Type 2 diabetes into remission, but lowers blood pressure, weight and improves Lipid ratios (though not necessarily total cholesterol).
By the way your Cholesterol figure of 5.2 (assuming it's total cholesterol) is well below the threshold originally set to prescribe statins from the original study dome to prove they had a beneficial effect. In fact there is more evidence that HDL and the Triglycerides matter (HDL should be high and Triglycerides low) much more than Total Cholesterol or LDL does.