Feeling depressed

I’m trying not to let PPD sink in this time around. My baby is less than two weeks old and eats a little more than 3 oz each feeding. I was feeling good about myself because I was able to pump enough milk for a day straight but my last two feedings were less than 2 oz. That means his next bottle will have to be formula since I’m not supplying enough. I wanted him to be exclusively breastmilk but I don’t think it’s possible for me.