How much breastmilk should a 4 month old drink while at daycare? My 4 month old son currently drinks 2-1/2 to 3 ounces two time during a 6.5 hour day at daycare. Today his pediatrician said he should be drinking 5-6ounces at a feeding. I'm always so stressed out after seeing his ped... He nurses 6-7 times a day plus two bottles at daycare. 7-9 times on weekends. I pump 2-1/2 to 3-1/4 ounces twice during my 6 hour shift.