Glad to hear you are doing well. Portion control is important but improved nutritional intake is the key to your lifestyle change. It's much easier to fill yourself on the right foods and feel satisfied vs. eating less of high calorie foods and fighting yourself. Start educating yourself on nutrition as diet can prevent diabetes and reverse your course.
I constantly hear that eating healthy doesn't taste good. It's just simply not true if you allow your body and pallet time to change. Finding the healthy foods you like and learning to prepare them is also crucial.
Treat it like a study for the best lifestyle you can muster. Nutrition has made a profound difference in my life. I'm rooting for you.....