my baby girl is 4 month old why her potty is become so hard ... what can I do to pass her motion easily and smoothly

A. Constipation in Babies less than 1 year is very common and more in formula fed babies and also when initially the semi solid foodggd has been started after 6 months . you can give bonnisan drops and some enzyme preparations in proper dose suggested by doctor and cow's milk should be avoided rbefore 1 year of age . Medications are required but it should be given only in medical supervision .