#asktheexperts My baby is 4 months old. He is drinking only 30 ml once in 3 hours, and sometimes only 20 ml once in 4 hours. Actually, he used to drink 60 ml, but I don’t understand why he is drinking less now. In the 2nd and 3rd months, he used to sleep 6 to 8 hours at night without drinking milk, even if I tried to wake him up. But now, even when he wakes up, he is taking only 10–20 ml of milk. He has been on formula milk since the second half of the 1st month.