I want my wife and son back, she blocked all the communication

Hello. I've been married to my wife for 6 years 8 months. We have a beautiful son of 3 years old. We both are IT professional and belong to educated family. It's a love and arrange marriage for us. We spent a reasonably good time together apart from our small fights and issues. We both loved to see new places...so visited many places together. But yes, one issue which we had time to time was...my wife wanted to take a separate flat for her as me, my wife, my son and my parents we were living in 2 bhk Flat together. I m the only child for them. So I wasn't happy for this proposal. But we had a issue for this. Last 3 months we both had lot of arguments and fights. Her family my family everyone got involved. Then everyone suggested us to take separate flat. My parents agreed but requested us to take the flat nearby so that we would take care of them and if they need anything they would ping us easily also we can drop and pick up our son conveniently. As from the birth my parents are taking care of our son ,we both are working. But then we had a big fight in between, we both lost out temper and control and hit each other, used abusive and foul languages. My wife called her parents, they came and both side parents fought with each other taking side their own kids. Things turned into bad and they filed case in the police station (not FIR) 498A, domestic violence, 504/506 something. We went to the police station and explained everything. She hit me too and her parents used abusive language as well. It was from the birth sides. But after this she blocked me , my family and my friends from every possible place. Police asked what we want . I told them I want my wife and son back. And will correct my mistakes. They called my wife's parents after 15 days and informed them that we want to reconcile. Wife's parents asked for more time as they were not sure for second chance. They need time. We agreed to it. But not it's close to 2 months. Still no communication , no phone call had happened from their end. Me and my parents we are missing the kid so much. We requested twice thrice to police to allowed us to meet the child or talk to him in a phone. Infact I want to talk to my wife as well. I m missing her so much. I don't want divorce, I want my family back. Please guide me what best I can do in this case. Everyone is suggesting not to go for legal case, or any FIR as it will spoil the situation more ... moreover when I want my family back and want to take a second chance. But this time is Killing for me and my family. What's going on their mind we wanted to know and we want the child most. Please advice and show me some path.