Leaving an abusive relationship, need advice when it comes to this stuff hah

So this is going to be my first time living on my own. Doing the math, I’ll have very little money leftover after paying for bills and necessities. I have a one year old, and can’t leave the area until custody is sorted out so I’m stuck in a somewhat expensive area. I found an apartment for 890 a month and I make around 2000 a month. I just want to know how do you guys cut costs in your day to day lives, bonus points if you have a child and know how to cut costs in that area. I’m looking for used cloth diapers to buy and I’m gonna make cloth wipes.