It really sounds like you are undereating to me- I did that a lot at the beginning and my sugar was always running on the high side. I always eat protein with my carbs in teh ratio of 7 grams of protein/ 15 grams of carb. I eat more protein and I don't monitor fats because I don't eat processed foods or trans fats.
There is a book called the Insulin-Resistance Diet that explains this eating approach- I team it with lower carb eating - and it works great for me.
I get Hood Calorie Countdown at Walmart - I've seen it at Kroger and Wegmans, various markets in New England. It comes in chocolate, 2%, and fat free - they're all low carb. I cook with it to make mac and cheese- it works just like regular milk.
Greek Yogurt is high protein low carb- 22 grams of protein/5-6 grams of carb per cup- between 90-110 calories for the fat-free. It comes in fat free, 2%, and full fat. I buy the plain, unsweetened version and add flavored Stevia or daVinci syrups to make different flavors. Trader Joe has it's own brand, Whole Foods carries F A G E, and skyr.is Stoneyfiled Farms makes it uner the brand name OIKOS - I can get that at Gient Eagle, Whole Foods, Kroger. This type of yogurrt is like a creamy sour cream- I use it as a substitute sometimes, but I still use real sour cream.
I think you'll be able to eat more if Januvia works for you.
I just want to live happily ever after-every now and then. Jimmy Buffett