If you are type two diabetic you need to reduce your blood glucose - diet and exercise might be significant features, but exercise can in some cases cause blood glucose to rise, and mistakenly eating 'healthy' carbs can be pretty disastrous too.
As meters to test BG are not usually given out to type twos, getting one mail order along with a supply of strips and lancets is a good first step, and using them to test how you respond to various foods will show you the way to go. It is also useful to see how eating at different times of day affects you, and also different types and intensities of exercise.