What are your plans for resuply

[harrypalmer]

Things like tomato need a lot of water. look at growing what you can preserve. Spuds will last through the winter, carrots can be dried or stored layered in dry sand and will last months. 'Hard' cabbage and onions will last months and both can be pickled or dried in your dehydrator.

Have you looked at 'canning' American style?

https://www.youtube.com/watch?v=rqIa7SBeTPU