Hii!
This barely depends on your speed and ability to study. As you say, that your basics are weak, so for now, focus on making them strong, refer to some books which make you understand the basics in easy langauge. Also, side by side solve previous year question papers and check your speed. Procrastination will not work and you need to be totally dedicated and work hard as well as smart to achieve your goal in just 8 months. Focus and study. It is possible.
The link given below will help you -

https://engineering.careers360.com/articles/jee-main-preparation-tips/amp


Hope this helps.
Good luck!

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