Fairlife milk is fine. has a long shelf life and is ultrapastuerized. Kefir is an alternative. I don’t know about using yogurt on cereal as a milk replacement but I guess it might work. After using Fairlife, you won’t be able to drink regular milk. It smells and tastes spoiled.
Ive always detested cow’s milk of any kind. I use almond milk in my coffee and on cereal, it has more calcium than cow’s milk.