Re: 4 ounce min requirement at daycare
mommal is right, the rule for at least 4oz if formula specific. Breast milk can be given in smaller bottles. Print it out and show them if they are being insistent.
As a side note, I HATE the USDA rules for infant feeding, which is why we are not sending my daughter to the daycare where my son goes to school. We specifically found another place that doesn't do the USDA garbage until they are toddlers, and infants are fed however the parents want.
My little man was born 12/17/2010.
Baby girl was born 4/30/2014.