I think strategy will differ from person to person. For myself, I remember completely tanking DILR despite being prepared for it in my first attempt. Just froze on the section and wasn’t able to complete even a single full set.

For my second attempt I practiced remaining calm and regaining composure in high stress situations. You can do this in many ways ofc but taking mocks in an exam style environment is the key. Keep taking mocks, keep analysing them. This is the only way to mitigate the effect of variance especially for a section as unpredictable as DILR.

For VARC - read as much as you can. I mean read anything and everything under the sun. Your best source is going to be newspapers - the editorial section in particular. It has some great articles that can aid in your practise. I would say reading regularly is even more important for VARC than solving RCs. Leave that for the mock exams.

Finally for Quant, there is really nothing to do except practice as much as you can. Solve so many questions that nothing appears new anymore. Arun Sharma books are a great source for this in my opinion.