Bad Sleep and blood glucose disorders go hand in hand.
One of the symptoms of fluctuating levels is disruptive sleep and insomnia.
Don't do the sleeping tablets, in my personal experience they don't do nothing but give you a few hours rest, and then after a while you can't sleep without them.
Don't do the nytol, as its not recommended for diabetics, too many bad ingredients.
You have to learn again to go to bed at around the same time, get up the same time, maybe do a little bit more exercise, get yourself tired, a natural tired and most importantly of all, control of your blood glucose levels. Control and consistent normal blood glucose levels will give you a better life and then things will settle down and you will sleep naturally.