production. please help

Kaela

i have premie who was born at 34 weeks so latching on is difficult with him getting frustrated most of the time before he came home I was pumping at least 4 oz in each breast now it's like my milk supply is draining I can barely pump 3 oz on my right side and like one and a half oz all my left is there any way that I can get my milk supply up because he's taking almost 5 oz and I really don't want to have to depend on formula feeding please help