Grandson Right in Grand Parent Property

Dear Experts. Please guide, iam going through a section -125 case from Feb-16, I have a baby boy who is now 2.5yrs old and living with my in-laws. My wife is living without my son in another place.She don't have any attachment with my son and don't want to give me his custody too.last time after the court hearing she said to me that now she will file a new case for right in property for my son. We have some agriculture land which is in the name of my mother and land was purchased after selling our ancesstral land. Please guide me whether court really award some share of property which is n my parent's name to her as my son is just 2.5 yr old. We don't want that she take the benefit in the name of my son. Can we put any clause or condition that property can be automatically transferred in the name of my son once he become 25yrs and understand all the situation.