You don’t have to replace your calories from animal products with produce, foods like beans exist. Also some produce like onions and potatoes have long shelf life.

Another victim of not having stores close to housing I take it, I feel for you.

There’s lots of plant based stuff with a long shelf life like TVP, beans, rice, grains, pasta, lentils and so on.

Frozen veggies are great and still nutritious and you can freeze loads of stuff like tofu, seitan and all the various meat alternatives.