No worries. Just go into "frugal mode". Of course, you will have to get your hands dirty....
1. never pay full price. shop sales, buy in bulk at sale prices, then freeze/can surplus. A good "dent room" at a canning company is worth traveling to for $6 a case veggies in dented cans (inspected before sale). Check company stores at food manufacturers that sometimes sell cosmetically imperfect but still nutritious foods (spaghetti bends, crooks where sausage as hung over a rack, improperly trimmed produce, dented or mislabled cans, for example)
2. go back to my "the budget is in the crapper cookbook" for rock bottom cheap recipes from wartime rationing days, the great depression, or the food stamp challenge, for new ideas. Been saving those recipes for under $1 for years now, and many are comfort foods as well. Make that meat/eggs/cheese/milk stretch.
3. increase the garden and orchard, preserving surplus or swapping for eggs with the farmer down the road. Offer to glean (pick up unused) apples, or pick the corners of commercial veg fields where the mechanical pickers can't drive. Offer to take produce overloads at the local truck scale where they have to remove overloads before proceeding. I have found mountainous piles of corn, potatoes, and other produce in such places, free for the removal (if the food pantry does not have someone available to get to it first). They have had to beg folks to take the surplus at times!
4. hunt, trap, fish. lots of meat if you know what to do with it. those "evil" trappers have discovered than many fur bearers are also edible and delicious to boot - if you know someone, perhaps they will sell you some meat, or you can barter for some. If you find out what invasive species are edible you can harvest all you want without legal trouble (asian carp, garlic mustard, and the like). And many states do not regulate what you trap or shoot on your own property (if you have room to shoot, that is, otherwise live traps and a .22 are more practical).
5. Similarly learn what wild edibles grow in your area and utilize them. Many ladies canned weeds during the depression when the drought destroyed their gardens. Crab apples make superb jellies, many are sweet for sauce as well. Berries are free for the picking and worth the scratches. Jerusalem artichokes grow all over like, well, weeds, and are delicious AND perennial. Many greens, tubers, nuts and fruits can be had once you know what to look for (even in the city).
6. Most importantly, WASTE NOTHING. Save fats for cooking so you do not need to buy them; make bone broth; chop leftover meats for soups, casseroles, stir-fries, burritos, wraps, egg rolls....
(I am so glad my parents were depression children & taught me what they had learned...THANKS MOM & DAD)
oh, btw, frugal prepper, I have canned using a 2nd hand single electric burner aka hot-plate. Cheaper than a camp stove. A new one is $20 if you want to go top drawer.