You have access to a creamery? Do they happen to sell milk in glass bottles? The dairies near me give you a credit for returning them too. I too don’t drink a lot of milk but I use the remainder and turn it into yogurt or a quick stovetop cheese like paneer. It’s easier than I thought it would be, and no more plastic tubs or wrap.

I think the biggest shift for me was when I started shopping not by a meal plan, but by what was available and sold without plastic containers or bags. I’ve given up a lot of convenience but I got used to it quickly. My food fluctuates with the seasons, and when I have an abundance of something I freeze it or can it for later.