My DiLr score fluctuates a lot . From 30-35 to 10-12 What can i do about it ?

really...I'm also facing the same problem.

Try to observe in mocks where you are scoring 30-35 which type of sets are you scoring the most in. In mocks with 10-12 , see what type of sets are causing you trouble. It might be that you are good at hexagonal DI charts but bar charts + LR isn't going that well. So try to identify the sets you are not scoring in and do 2-4 examples of each weakness area.

Thanks , yeah i just saw the ones in which i didn't score much had 4 charts and 3 line charts

Exactly same problem here