Hi,

Yes, It is worth to take a second drop for the JEE if -

1. You are determined to work hard for one more year..
2. You have scored lower than your actual potential because of bad luck.
3. You haven't covered whole syllabus as per requirement of JEE exam.
4. You truly believe that yes you can do much better next year.
5. You haven't practiced a lot of questions as practice makes a man perfect.
6. You had joined a coaching which was not upto the mark and there is scope of joining better coaching institute than the previous one.
7. You have done well in boards, you can take a drop. This means your basics are clear.

No, if you won't consider the following factors before taking a drop. a second drop not at all worth for JEE. Instead do engineering from a private college. At the end of 4 years, your skill would matter the most. Take admission and start doing extra coding. First learn a language and then do DS + Algorithms. Then start doing competitive programming. You can also take a job from off-campus placements. There is also a hope that your destiny has planned something very great for you.

Stay motivated and work hard.

Hope this helps.

Good luck.