Diabetic dog care & warning signs

My sweet little pug, Perogi: Queen of Pugs, has developed Diabetes! She is 13 years old, so it's not un-common in pugs.

Her backstory: We received Perogi into our lives 10 years ago when she was 3. She was over 30 pounds! Seriously, she looked like potato with toothpicks in it. Her previous family did not take her for walks & left puppy chow out for her to eat all day long. A pug. With food. Waiting. All. Day. Long.