The six-month-old baby has loose, watery stools resembling egg flower soup, with a high water content, less urine, and a yellowish tint. The tongue coating is white, which might be due to rotavirus enteritis. It is recommended to feed the baby appropriately, adjust the diet, and be cautious about preventing diaper rash. In case of severe diarrhea leading to dehydration, electrolytes should be replenished, and medical attention should be sought if dehydration symptoms appear.