Make a plan…
Wether it is,
Plan A Bullet Journaling…
Plan B Free Printable Menu planning sheets
Or Plan C
All of these planning options give you place to start a list items of items you need from the store. As well as a place to start budgeting, and saving. We use YNAB (You. Need A. Budget) to help keep track of our budget.
Also, I have found this this PDF of average food cost helpful. As we allocate monies for our grocery budget.