Struggling financially, and need some advice.

Hello. I live in NJ, and really struggling making ends meet. I currently earn $13 an hour and do about 35-40 hours a week. I take home about $650-700 every two weeks after taxes. I share a two bedroom apartment, and my rent has been around $870 a month with utilities. I can barely afford food. I’ve only been eating once a day lately, and it’s not fun. Saving for a down payment on anything is virtually impossible right now. Getting a second job is difficult because my schedule at my first job constantly changes. I’m thinking about going back to school or college, but that’s not cheap either. After I pay rent, I pretty much have nothing left over for myself.