How to custody of a Minor child to his father

Respected Lawyers, To make a long story short, I married a girl in 2018 and now have a 2-year-old son. Now my wife has been living with her family for the last six months and is planning a second marriage, which I have no objection to at all, but I want custody of my child because, when I investigated my wife's family background, I discovered that this family has a history of setting up marriage traps and then blackmailing people. These people have attacked me twice and are now refusing to let me talk to or meet with my child, even on phone calls. As they are very powerful in their village due to local sarpanj support (local politicians) and as my wife's family is a local bootlegger (a person who makes and sells alcoholic liquor illegally), As per my knowledge, a father can get the child's custody only if the child is 5 or older, which is really disappointing. At that point, the child will almost forget me. Please advise me on what I should do in this situation. I'm hoping for a positive response.