You could always get millet cheap at the coops, but I don't think I've ever seen it for sale in grocery stores. When I looked up how to cook millet in an Instant Pot I ran across a recipe for Millet Breakfast Cake that you might possibly like. It sounded good, but it was so aggressively Vegan that I was put off by it. I mean no, I am not going to go out and buy almond milk and almond flour and make fake eggs out of flax seed just to try this recipe. But since you might actually be allergic to some of the components that this cook was so assiduously avoiding, you might like to try it. I'll text you a link.