Agree with many of the previous posts. Your milk production is right on target. If your baby nurses 10 to 12 times over a 24 hour period you are doing great. Count the wet diapers and the soiled diapers. 6-8 wet ones, plenty of soiled ones, depending on the day. if the baby is getting breastmilk exclusively the soiled diapers will be yellow/green and runny.
4-5 ounces of breastmilk per feeding is an ounce or two more than an infants tummy can handle. 2-3 ounces per feeding with a period of marathon nursing in the early evening is more typical. For me, the marathon feeding took up the whole 4pm to 7pm time slot. So who knows how much milk the baby really got. Happy baby, soft breasts after nursing, wet and soiled diapers. Prolactin high for momma..its all good.