I asked my endocrinologist n she explained that it’s stress that caused the sugar to go up when you wake up .Getting breakfast ready can cause stress to the body . Using the Libre Sensor that attached to the arms is good , it tells you which way your blood sugar is going , you can see the spike ^ of blood sugar if you drink sugary drink , to stop it from going higher n higher , drink lots n lots of water . that’s my personal experienced .