If my BG is under control, my sleep is unaffected.
If my BG is high, I wake up, give myself some insulin and go back to sleep.
If my BG is low, I wake up, crunch some GlucoTabs and go back to sleep.
When you wake and check your Libre, what do you find?
That your BG is too high/low or that it is ok.
If you are waking due to your BG, I would not see that as a bad thing - it is your body reacting and getting you to deal with it. If this keeps happening, you may need to consider your insulin doses to stop the waking.
If you are waking when your BG is fine, it may have nothing to do with diabetes: it could be stress with some other part of your life or something you ate or ... it could be stress about diabetes.