My DS is dairy free and gluten free. When he was only dairy free, I found the BEST resource for dairy free cooking and living. It has a great list of ingredients to avoid that you can print and take to the store with you.
http://www.godairyfree.org/
They also have a cookbook with tons of information and lots of really good recipes! It is Go Dairy Free by Alisa Marie Fleming. It is worth the price and the only one I have tried that is worth owning.
You can easily convert the recipes to suit your diabetes. We also have a diabetic in the house.
Here is a great and easy recipe for dairy free cream soup. It is for mushrooms, but if you prefer cream of chicken, just replace the mushrooms with chunks of cooked chicken.
http://mustfollowrecipes.blogspot.co...room-soup.html
You can also buy Better than Cream Cheese by Tofutti. You can also buy soy yogurt or coconut milk yogurt. There are also several cheeses available made from soy or rice milk.
Dairy free isn't really so hard. Once you get the dairy out of your system, you will feel so much better! There are tons of resources on the internet just google "dairy free recipes" or "dairy free lifestyle".
Remember, at the store, foods marked Vegan are dairy free, as are foods marked Kosher Parve (or Kosher with a P in a circle).