Actually, you have every right to stay with your father.
According to Indian Law, custody of a child is with the mother till he attains the age of 7 in case of a boy; and till she attains puberty in case of a girl.
And after 13 years, you have all the right to choose with whom you want to live. Now, it doesn’t matter that your mother wants to get your custody. You can on your own can choose with whom you want to live. You don’t have to worry about that anymore. You will be asked in the court with whom you want to live, and if you say your father then they will check his financial status and will permit you to live with him.