I tried to introduce formula fed of 90 ml once a day to my 3 month old baby girl as she was getting cranky and feeling empty after breastfed. In breastfed she is not drinking milk for more than 10 mnts or falls asleep within minutes. These leds to her becoming cranky, crying and demanding milk after every 15 mnts to half an hour when she is awake. Initially after giving her formula fed once a day of 90 ml with 3 scoop powder, after 4-5 days the motion she passed had foamy and greenish effect, so we stopped it. When she became 3.5 month, we again tried formula fed once with less concentration but this time she threw up all the up and kept on crying that whole night. We tried the same after a week with same result. Please suggest.