babsatamelia - So sorry to here about your health problems, but so glad you are taking an active role in making them better!
Diet plays such an important role, if not THE most important role, in our physical and mental health.
The weight-watchers point plan is a solid, easy to follow program. It offers you great variety, as well as giving YOU the control over what you decide to take in.
I'm all for it!
Here's a link to their site, you have to join (and pay) to use the member features (journal, point calculator and such), but the recipe files are free to all!
Weight Watchers
Adapting recipes, as you did with the cake, is a good way to reduce fat.
Applesauce (unsweetened) is also a good replacement in situations like that.
I try to stay away from nonfat products, especially the dairy products.
They tend to have increased sugar, or ingredients that easily turn to sugar as you process them. I find that the low-fat items tend to be a healthier option. And they taste better