not producing enough

My lo is a month old and eats about 4 oz sometimes a little more I only produce about 2 oz pretty much if he wants to eat every couple hours he'snot getting much. Like I was sick and couldn't feed him so I had to pump every couple hours I pump and I wouldn't only get like an oz pumping both. I feel like I'm failing not producing enough for him. Every time he gets done he's still hungry sometimes I'm feeding him for literally an hour or more and he's still hungry. Any advice? One sad mama