I can imagine the dairy is why you're hurting today lol.

Also you can cut soy and still be vegan. I do Soylent because it costs less than any convenient food in my area and I like it. If I had money to shop and cook groceries regularly I would probably only eat tofu for soy intake. My main driver of Soylent is price-to-performance but I was vegan before trying Soylent.