The amount of milk a 2-month-old baby eats is calculated according to the weight of the baby, exclusively breastfeeding on demand, and artificially feeding. 1. Exclusive breastfeeding: 2-month-old babies can be breastfed on demand, breast milk will gradually increase over time, usually baby moms drink more soup, supplemental nutrients, help milk secretion. 2. Artificial feeding: artificial feeding needs to be based on the baby’s weight, as well as the specifications of the formula, the estimated infant formula intake, according to the instructions of the formula correct preparation, every kilogram of body weight per day about 135ml, which is the total amount of the day, divided into 6 to 8 times to feed. The amount of milk consumed by infants also needs to be judged according to weight gain, as well as demand in a comprehensive manner.