Predictions are that grocery prices are going up, which seams credible. Costs have gone up for farmers, distributors and packagers and commodity prices on the spot markets have risen.
Your grocery bills could go down if you eat out of your cupboard for one week out of the 4.3 (avg) weeks in a month.
Buy only proteins and produce and then, for the rest of the week, supplement that with the contents of your cupboard.
Eat the canned and packaged foods, the pastas, the frozen items, the rice, the soup, you get the idea.
And, if you can deal with it, work from the back of the shelves to the front to make space for fresher stuff. You'll discover food you forgot about which you must like, or you wouldn't have bought it in the first palce. Not everything has an indefinite shelf life.
That'll trim the market total nicely, and neaten your cabinetry as a side benefit.