Child support Help?

Ok so my baby daddy recently just told me he's tired of me so I left and we talk about how much is he going to give me each month, I don't work but I am planning to look for a job in the future, he only asked to see his son on Saturday and Sunday because he has 2 jobs on one he works mon-Fri and the 2nd one mon-Thurs he wins like 2,800 a month and that's with the taxes taken away , well he said he would give me $300 a month is that OK? We talked about me not putting child support on him as long as he gives what he has to every month....This is his only child right now & We live in California