One way to make half your grains whole is to try a new whole grain breakfast cereal.
Since we are on the topic of cholesterol, you should know about the antidote (remedy) to cholesterol ”lecithin. Rather than only avoiding cholesterol foods, it would be better to make sure you include foods high in lecithin. And you might be surprised that a very excellent source of lecithin is the egg yolk ”the exact thing people who have high cholesterol are told to avoid.