It is very difficult for mother to know how much breast milk a baby is receiving during breastfeeding. However, the volume of infant formula intake is measurable. The estimated intake of infant formula is shown as below:
Birth to 1 Week
Infant who is a week old should normally feed on cue for about 6 to 10 times a day. The amount of infant formula for each feed is about 2 to 3 oz (60-90 ml).
1 week to 1 month
The volume of formula consumed will increase with age. So, infant who is older than 1 week need 3 to 4 oz (90-120 ml) of formula each feed. He should feed in every 3 to 4 hours, which is about 6 to 8 times per day.
1 to 3 Months
The frequency of feeding decreases to 5-6 feed per day when an infant is about 1-3 months old. The intake of formula increases to 4-6 oz (120-180ml) per feed.
3 to 7 Months
A 3-7 month old baby should drink 6-7 oz (180-210ml) of formula each time. He should feed 4-5 times a day.
7 to 12 Months
After 7 months, an infant requires 7-8 oz (210-240 ml) of formula, 3-4 times a day.
Please take not that the size of a baby and the activity level will affect the actual intake of infant formula. The values provided above are estimated. If you have doubt, please check with your birthing hospital or ask your lactation consultant for advice.