I suggest you to attempt April jee too. They will consider the best of two so even though you get good percentile in the first attempt there is always a chance to improve so why don't you give a try.
By the way congratulations for your score and all the best for your future.

Hello
Firstly congratulations for your percentile in JEE mains January session well
The benefit of giving the JEE mains April session is if you got percentile then January session then it will helps they will consider the April JEE mains session
So please register for April session as well
All the best

Hello.
It solely depends on you whether you want to write the exam twice or not. If you are satisfied with your performance and think that you couldn't be able to improve your score further, you needn't write the exam again. However, as NTA will be considering the best score of the two exams, you can write the exam to try and improve your score.
Good luck!

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