Chances of marriage conciliation and child custody

My wife wishes for a divorce after 5 years of marriage. We have a 4-year-old kid. The reasons are: - I'm not taking her stand when some dispute happens between her and my mother (though in private I tried convincing my parents not to be involved much) -Not being social and involved in her relatives (but it's non-intentional) -Also not get enough freedom like attending every marriage of friends or relatives or socializing with her friends circle. (We both are from health care background). But now I convinced her this thing will not happen in future but she is not relying on me. Also, I told her our son is a good reason to continue our marriage (as she always finds problems in every solution I create) And still asking for a divorce. I also helped her to establish a clinic (currently staying with her parents). I am still absorbing this. To be honest I don't want our child to be mentally traumatized during and after this separation (I explained the same to my wife also) I wonder why she wants a kid with her if she doesn't wish to continue our marriage despite the solution I'm giving her. Also as per law, I came to know that till the age of 7 kid will be with his mother. Is there any chance I can get custody of a child before the age of 7 (I have my flat, have been admitted to a reputed icsc school, and my father and mother take almost care of my son when we are out at work) Also, can I put a legal stay on her Shop that I helped in her establishment? (Though I don't want, but least with fear she can think of a return. Her parents are least bothered about her decision as she is financially independent now) Kindly guide. Thank you, Regards.