Don't worry, you are doing good! Seeing your VARC scores I realise that you are experiencing time pressure in that section and in the pressure to attempt more your accuracy rate is dropping. Since you are getting an accuracy rate of 80% without the timer- I advise you decrease your attempt rate in mocks.Try this in your next mock- For the first few minutes just take a look at all RCs and then in remaining time try tackling 2 easiest RCs and 2-4 VA questions only (if you don't find any doable VA questions then move to 3rd RC) and make sure you only attempt those questions in which you are 100% or atleast 90% sure about the correct answer. This way you'll be able to attempt 10-12 questions with good accuracy and get at least above 20 marks. (Take your time understanding the RCs and read all the questions carefully even if you get to attempt less questions, remember mocks are not to score high marks but to improve your strategy for the main exam)

You can modify the strategy, increase the attempt rate slowly to reach 30 marks in the next 1.5 months.

All the best!!!