type 1 diabetes and weight gain?

I have decided that I need to loose weight as I feel I have become insulin insensitive.I have also decided I will be doing this slowly and healthily.I understand there is a relationship between large amounts of insulin and weight gain.So if I reduce my carbs and therfore my insulin and do exercise to furher reduce my insulin needs will I loose weight?Also if I was having a snack what is better an apple or lean protien as the apple would require more insulin....will I have to reduce my fruit intake to loose weight?Im sorry about all the questions I am just so confused.Perhaps everything I am saying is wrong!xxx