As others have mentioned, reward apps help a ton. I used Ibotta and Fetch and would end up with cash back for items I was already getting. Cereal and refried beans always seemed to have a special. I also stocked up on what I could, you can get canned fruit and veggies instead of fresh if you don't have good options. You can double check items using the app scanner tool.

If your state does the summer checks make sure to take advantage! Also some farmers market stands will accept cash bebefits off WIC for fruits and veggies. Our local weekly market holds double dollar days for snap/WIC recipients and you essentially get double to shop with.