Divorce +maintainence for sick girl child, wife earning more

I earn 60000 and husband earns 31600. We got married in 2016 and are living seperate since Aug 2018 after facing cruelty n violence. Also because daughter was born with cancer in 2017. Husband family is very calculative by 2018 the settled all the property etc in the name of their married daughter n mortgaged their home.i didn't know. Now after husband bested me n child I decided to stay away. Since 2018 his family n he never agreed to contact or take us. Now I filed complaint. I want cancer treatment expenditure n maintainence for my daughter. But he is not giving. How can I get money for her surgery from him plus general maintenance? He is saying you earn more and he is just earning 31600. No one sees my expenses are also there I am paying for the apartment in which we two are living and electricity water, petrol 4000-5000, medicine and tests for child. Her school, and other things. Treatment requires 45 Lakh. He says I can't afford. He is at heart not interested in the child or me. What should I do? How will court help me? He is narcissistic personality. How can I prevent his interference in future and make court realise that solo custody is required for child's well-being and safety