How do I know I'm producing enough breast milk ?

Christina

So my son is 15 days old today and I'm breastfeeding but sometimes I question if he is getting enough I nurse every 2-3 hours. There are times my boobs are soft when it's time for the next feeding THEN there are times when they are full .

Is it normal for your breast to feel soft and not full ? Am I still producing enough? I ONLY NURSE HIM .. NO FORMULA..

Anyone else go through this ?