Breast milk

Can somebody give me some tips about getting my supply up. I only make 2 to 3 ounces every three hours I feel like I hydrate really good I eat really good I’ve been eating more pro Tien and I drink mommy milk body armor‘s and coconut water and I can’t seem to get my supply higher my son is four weeks old and drinks about 4 ounces sometimes five of breastmilk so I’m trying to make more and it seems like nothing is working it’s discouraging. Any tips will help thank you!