Stay off the sugar - not really all that useful.
Type two diabetics cannot cope with carbohydrates, that is starches and sugars, as they increase the glucose in our blood - which is bad.
You might find that having a blood glucose meter will help you get control, so you can see when you have eaten too much carbohydrate and have spiked your levels. By tweaking your menu, having lower carb foods avoiding bread, potatoes and other high carb foods your levels will drop down into normal levels.
I got a tee2 meter from Spirit Healthcare as the supplies are cheap enough to do all the required testing. I am told that if you phone up and order a fair few strips they will supply a meter for free. As a diabetic there is exemption from VAT.