Dear lybrate-user,
little unlucky to have diabetes at this age. More important at this stage is that we determine what exactly is the type of diabetes you're suffering from.
If you're only on multiple dose of insulin then it is supposed to be type 1. But if you're obese with family history of diabetes and you are on oral tablets then mostly it is type 2 diabetes.
Fruit juices are better avoid as they contain only fructose and no fibers. Once in a while you may take liberty though!
eating all fruits keeping in mind the calorific value of that fruit is always better.