Start reading your food labels, if you don’t already. You will be quite surprised to find there is more soy in your diet than you think.
Yes, I am an avid label reader. When my kids were small one of them had to avoid milk/wheat/eggs. I started reading labels then, and have never stopped. I want to know what I am consuming. I was the mean Mom who didn’t let my kids eat sugar on a regular basis, and made most everything from scratch. We rarely ate fast food, soft drinks, etc.