The other thing that might help is to graze throughout the day. I always have oranges, apples, strawberries, carrots, etc with me. I grew up with a mother who was a Type I diabetic, so we all kind of learned to eat smaller portions, but eat something in between (as long as it is healthy). You will find it is much easier to eat smaller portions at meal time then.

BTW, there are alot of good cookbooks and cooking websites that have diabetic recipies, so you will never run out of ideas.