Increase her Water Consumption, Offer Fruit Juice, Feed High-Fiber Foods, Try a Different Brand of Formula, Massage Her Tummy and Give Him a Warm Bath.
Two main factors can lead to constipation in children. These are early toilet training and changes in diet. Fortunately, most constipation in children is temporary. It can be resolved by plenty of intake of fluid, Diet and behavioural modification.
Paediatrician