Sure , you can do it, but why 98 percentile, try your best and secure 99+ percentile. Let me explain it to you strategically.

First you need to clearly mark out your Preparation Schedule and Time Table. For this I would advise you to download Leader Test Series Syllabus from Allen DLP Website.The Syllabus is excellently sorted out and giving 5 days for each segment, you can easily complete the syllabus revision, strongly within a couple of months.

Secondly, you need to clearly decide what material you are going to refer for the rest of the year to JEE 21. I think you will know better about the prerequisites and the materials needed, however I would like to add some suggestions which I personally followed and helped me boost my preparation levels

Resonance Rank Booster Series (PCM- JEE Main&Adv)

Resonance DPP Package ( PCM )

Allen JEE Mathematics Handbook (PDF Available)

Arihant Chemistry Handbook

Arihant 41 Years Chapterwise Previous Years+Solns

MS Chauhan Organic Chemistry + Solution Book

DC Pandey Series Physics (5 Books)

Thirdly, you need a perfect test taking strategy along with a good Test Series of a local or National Institute. I had opted for Allen Offline Leader Test series, you can opt for the Online version of it if available along with a good local institute Test Series.

As far as the strategy is concerned, suppose you have 3 sections in the Test, A B and C. There are chances you are comparatively stronger in any 2 of them, lets say A and C, while you find B quite difficult. Your target should be to prepare A and C before JEE and mock tests in such a way, that you secure almost 40-50 % of the total score only with A+C combined. And then your score just increases more above the threshold level with B. Simple.

Hence suppose you secure 140+/300 with A and C combined, your score in B being even a 30 can ensure your NTA Score stays around 99 percentile at 170/300. I hope youve understood the strategy.

Another addition to it would be the time distributions to be practiced.Attempt Section B at the last and try giving atleast the first 2 hours to Sections A and C. In JEE, preferably Chemistry should be one of your strong subjects and should be attempted first and finished earliest, within max 40 minutes, provided you have prepared well and strong.As a direct consequence you can give a good 70-90 minutes to your next strong section before moving on to your weaker section in the last 1 40-60 minutes.

Try Completing Syllabus Revision in these 2 months, followed by Test Series and a second revision of Syllabus in the last month. Hope that helps. All the best.