Also a good yeasty beer increases milk production ( but you do have to express for the next few feeds....)

I had decreased milk supply and at 2 weeks old they go through another major growth spurt...during that time MAtilda would be on the bb's for around 2 hours at a time & then we would offer 60mls and feed again 2 hours later. Its exhausting and it lasts a few days but then Jen's milk supply should increase with the growth spurt as well. Good luck! Call your local ABA as they have a chart as to growth spurts & when they "generally" happen.