Storing your food properly with a vacuum sealer then freezing them guarantees reusability almost every time.
You may be buying the biggest box, but is that what you really need? Compare unit prices and actual prices first before deciding.
Time to organize your shopping list and figure out which ones you need to buy first. You can find an app called Keep for this.
Having two email accounts surely does help.
Don’t grab an item on impulse. Make sure you know everything needed to be known, including prices and ingredients.
You can spend a lot less if you don’t always go for the pre-prepared or pre-cooked foods.