Welcome , Raechel and Phobos! I agree that you need to get a few night time tests in, but Phobos could even be bouncing from those pretty blues yesterday and two days before that. When a cat's body isn't used to lower BGs it can react to bring things back to where it considers things "safe." The liver will dump glucagon and counter-regulatory hormones to bring things back to what it is used to. Gradually the lower numbers will seem more normal.