My baby boy is 7months completed and halfway through 8th month ,he usually passes motion on daily basis but for past 4 days he did not pass motion and from yesterday he is passing motion in very hard rock like structure ,attaching image for reference

A. Maybe your child is not having enough amount of water in the diet that is why this is happening because when you start giving food to the child it is essentially very important that you should give plenty of water to the child and that is what is going to be