You can lose weight similarly to an adult who does not have pre-diabetes.
We have a diabetes center here at SP. You can sign up and get our diabetes/pre-diabetes meal plans to use. These are designed with your calorie range and use controlled carbohydrate eating plans for meals and snack. Here is the link to the center: www.sparkpeople.com/resource/diabetes-diet
Also...ask your doctor for a referral to meet with a diabetes educator who can work with you on your specific meal plan needs for blood sugar control and weight loss.
SP Registered Dietitian Nutritionist