breastfeeding

So I've been breast feeding since day one, however, I haven't been feeling as 'full' and I'm not filling between feedings. I'm drinking lots of water, I've been taking fenugreek along with my prenatals. I've used flaxseed and I still feel like my supply is severely dropping. I just tried pumping and was getting about 4 ounces each but just now I only got one ounce out of one side, and only half of an ounce on the other.. any suggestions? 😔