I saw public fruit tree foraging maps online and even posted them in the other place. Good luck remembering where without a physical map and making it safely that far tho. And carrying it home.

I’d try to make vertical gardens with the highest yielding stuff possible back at the base but subsistence farming is incredibly hard.

It would be smart to maintain the smaller high turnover animals or keep them alive for eggs but if you couldn’t manage the care of large or aggressive ones like cattle you could kill and dry the meat. Maybe keep a couple of cows for milk. Living cared for animals would give away your presence though.

Farms might also have rainwater tanks and stores of medical supplies and antibiotics