Needs nuclear family

Married 4 yrs ago. No problem between husband and myself. Leading beautiful 2.5 yrs of nuclear family. In first 1yr joint famil I have faced so much problems from my father in law, he speaks vulgar. But my husband supported me in every way, hence I managed. Then we decided to live as nuclear family and happily lived for 2.5 yes. 6 months ago, my in laws again came to us. Within 2 months they brain washed my husband and throw my son and myself out of the house giving horoscope reasons. Now I am in my mom house for past 4 months. We both wish to live together. But he wants join family, but I very well know that here after I can't manage with his father and I want nuclear family. We had counseling in women's police station too. In front of police he agrees for nuclear family, but once he go back to his parents he compels for joint family he finally said if I am not coming for join family then he only needs son not me. He decided to go to court to get my 2yrs old son. But I want to live with him. He don't have reasons too expect joint family. Is there any way for me to live with him in nuclear family? Court will help me?