Here are some things we do to try to cut down on grocery costs (just so you know, I have to eat gluten free and soy free plus I try to eat organic/natural foods as much as possible)
There is a list (just google it) that has the pesticide level of fruits and veggies. It basically tells you if you do not have the $$ to go 100% organic then definitely buy these fruits and veggies organic b/c have the highest concentration of pesticides.
As for milk, many more brands are putting out RGHB free versions. They are not organic, but at the very least they are free of the unnecessary growth hormones.
I buy some frozen fruits and veggies that are organic. My daughter seems to love them just as much as the fresh versions.
Costco has a much better selection of organic items every time I shop there. Even hormone free frozen chicken breasts!
Friends of ours stock up on meat whenever sprouts puts it on sale. You have to be diligent about planning meals out, though b/c of the time it takes for things to thaw.
I try my best to buy store brands of many items.
Amazon.com also has great deals when you do their subscribe and save deals.
I hope these suggestions help. If you have any more specific questions, please msg me. My husband works, and I stay at home. We do not have a lot of extra money each month so we are working hard at keeping our expenses to a minimum while still keeping a commitment to feeding our daughter and ourselves "good" food!