Hi, A motion once in 3-4 days can be taken as normal if the stools are not too hard or painful to pass. But once in week is a bit odd, and we have to look for any contributory factors. For a normal bowel habit, there should be adequate fluid intake and a healthy diet rich in residues / fibre. So include plenty of fibre rich items in diet, like fruits, vegetables, whole grains, oats and drink plenty of fluids. If these measures does not help in 1-2 months, kindly see a pediatrician for evaluation. In this case, we may need to get few investigations like thyroid function, serum calcium and barium studies. Hope I have answered your question. Let me know if I can assist you further. Regards, Dr. Muhammed Aslam T. K., Pediatrician