my lo still drinks only 1-2 oz at a time, and wants to be fed every 1-2 hrs. I am frustrated as sometimes I feed him 20 times a day! Even then total for the day is no more than 20-22 ounces. I tried feeding him more at a time but he spits up. I am frustrated as I cannot find time to pump & he's getting mostly formula because of that, he does not latch on either. How often does your 2 mth old feed, and how much at a time?