It is most difficult to know whether a baby has diarrhea or not is a 1-2-month-old baby. Infants aged 1-2 months have a soft and slightly fluid feces. Frequency CHAPTER it was quite often. That is why it is rather difficult to tell whether the baby is diarrhea or not. Another case with babies older than that. The frequency of his bowel movement is not as frequent at first, so when he suffers from diarrhea, it will be easier to recognize him.