Advocate not returning case file as client wants to withdraw from case

Hai Last month I've met an advocate as am facing some problems in partitioning the ancestry property with My family... So My advocate has sent a legal notice to the opposite parties and we got reply notice for our notice but now I want to get away I mean I want to stay away from this business because I've some pressure so i said the same with my advocate but he is asking a hefty amount of 2 lakhs for returning My case file documents . Initially I've paid 30K...... We haven't approached court yet and we haven't filed a suit in the court of law. The advocate just sent only one notice to our opposite party but now i want to close all this... but my advocate is asking me to pay 2lakhs for it... please suggest Me to overcome this problem and how to get My case file documents from him