my baby is 3.3 years old is suffering from constipation problem so I visited period reason he said he is suffering from milk allergy will protein allergy problem so he said stop all the Milk products from last one year I stop everything now I am thinking to give him and curd because is losing too much weight so I am thinking to give so I am confused shall I give him ghee or not and this milk allergy how long will take or it go away or not