Milk Money for Little Guys

We are a family of four, with 2 young boys that we struggle to keep food in the house from week to week. We do not recieve any housing or financial assistance from any state / government programs of any type. We pay our Rent and Utility bills, and make our Car Payment and Insurance payment each month. But we find it difficult to make the money stretch to put food in the house for the weeks between paychecks. We are a classic case of paycheck to paycheck, with no Credit Cards of any type. 

I only want to be sure I have Milk and Bread in the house for the boys each week.

Thank You so much for your consideration.