At this age,give 2 solid meals including curd and Banana in the diet,and 4 milk feeds including one top formula feed,using a spoon to give top milk feeds. Give ors after every loose motion if watery and add Enterogermina vial half vial twice a day for 5 days. If not improving OR accompanied by other symptoms like vomiting or fever or dullness and refusal to feed,consult your paediatrician.