I have just decided on a whim that I no longer want to support the dairy industry and cut it out of my diet cold turkey. I've already trialed a run and I felt great but it was so difficult. Never realized how much dairy was in my diet in basically everything I ate and it wasn't long before I ran out of things to eat that didn't contain it. Even subjected myself to eating cereal with water which was extremely unpleasant. It's been hard but I know you're the community to ask for help because you've probably went through this sort of thing before.
Nutritional yeast and popcorn is superior to butter and popcorn. Also, cauliflower "steak" (cauliflower cut into "steaks") with olive oil, salt, pepper, and copious amounts of nutritional yeast is excellent.