Ninny (93 with vascular dementia) has very bad diabetes that we are struggling to control. We changed her medicine a bit a couple days ago but are having trouble figuring out if there has been any positive change because she simply will not stop eating. I know I am supposed to test 2 hours after eating (or, if longer has passed than that, right before she eats), but I can't get a gap like that except first thing in the morning because she never seems to stop eating, so the readings are almost certainly skewed.
I have tried to take her snacks away but this simply agitates her. I have also tried feeding her large meals to keep her from snacking, but she still has her hand in a chip bag or a sleeve of crackers or a bag of bonbons within the hour, even if I 'stuff' her. She never seems to stop being hungry. How the heck can I get accurate readings when she won't stop eating?
I settled on a compromise for me. I took away the things she tends to binge on and left the things that didn't cause her to binge. So chips and nuts are out. Crackers and sugar free cookies remain.
Good luck; this sounds like a hard situation to change.
On a related subject, make sure she gets her teeth checked regularly; all that sugar can increase her risk for tooth decay.