There have been times where I have found GREAT deals on good food at 99cents only stores. Not sure if this franchise is in your area.
They have bagged salads or bagged veggies (like you'd get from the grocery store) for only .99. Also I got a 5 lb bag of oranges that were DELICIOUS for only .99. I also get bread from there, as well as some other staples.
Also, milk can be frozen. If you find that it's something that goes bad on you... perhaps pour some of it into a container that you can use as needed and then freeze the rest. I thought it would be gross but once it actually becomes liquid again
, it taste like milk LOL.
Also I have used couponmom.com on occasion as well as sale paper ads. You can print only the coupons that you will use. Sometimes there are really good deals.
I tend to also make extras when I cook something and then freeze it for easy meals that can be reheated fairly quickly (spaghetti, chicken breast, beef, turkey, etc) and used in a variety of meals.