I honestly don't really know, but i can guess.
Stock on basic food items, maybe enough for a year or more (including noodles, rice).
Maybe, if you can afford the space/time for it, learn how to grow some basic vegetables on your balcony/garden, to go along with the calories.
That is all i can do. Maybe, also look into viable long-term accomodations in case you lose your house/apartment. Could be homeless shelters, could be sanctuaries, idk.