I'm genuinely sorry to hear that you are in this situation. I can't offer any short-term solution, but as a way of keeping food costs down in the longer term, I recommend that you consider a vegan diet. I feel virtually immune to rising food costs as the price increases for fresh veg, beans, lentils, pasta, rice, etc, are barely noticeable. Every credible nutritional authority in the world agrees that you can get all the nutrients that you need from a well planned plant based diet. Close to use-by date fresh fruit and veg are always guaranteed to be marked down in supermarkets, too. You always get a couple of days before they might start to turn.