I have completed my 12 exams and also filled jee form but on evaluation i found that my preparation is week for the paper Should i go forit

Dear Ravi,
As you have already filled for the exam it will be considered as an attempt. And as of 2019, it is declared that you'll be given 6 attempts to clear your JEE mains. so instead of forfeiting the exam, you can use this as an opportunity to know more about the areas you are weak in and before your next attempt you can strengthen yourself on those parts.


But anyway, let's assume its just your lack of confidence speaking and you've got decent preparation I.e. board level and you're ready to invest remaining time into practice to prepare yourself for the big day, then you can surely make it.
One needs to score around 120 marks to clear JEE mains but it wouldn't give you a good rank.


I'm assuming you still have half a month before the exam, should you focus and manage time really well into preparation then you can score good marks.
Chemistry is popularly known to being the easiest section in JEE so if you input more time into chemistry and some maths, it shouldn't be a hassle to get good scores enough to clear the paper.


Chemistry is the best investment and it is also easiest to grasp even at JEE level as most questions are not very different from what you see in NCERT.

• Atomic structure
• Equilibrium
• Inorganic chemistry
• Kinetics
• Coordination compounds

Coming to Physics, it's best if you focus on the following topics:

• Gravitation
• Optics
• AC current
• Current Electricity

Don't even bother with mechanics as it is time consuming as heck and also modern physics. Both of these topics will have good weightage, but as long you have some topics of maths covered well then you can easily balance it out nicely.
Coming to Maths,

• Probability
• Matrix and determinants
• 3D geometry
• Differential equations

These topics will fetch you good marks provided you haven't left out anything.
Tips:

• Attempt questions which look easy to you.
  
• Don't play guessing game. Beware of negative marks.
  
• Take your time. Questions you don't know, just leave them and focus on the ones you think you've had seen before (lol)
  
• In your last days (5-7) before exam, ONLY focus on the sample papers and previous years papers. There are plenty of Google apps (edurev) and even websites (this site itself) from where you can access previous years question papers.
  
• Take minimum 2 mock tests to develop your speed.

I hope this helps you in making a good decision.

I AM WRITING ANSWER FOR TWO TYPES OF PEOPLE:

TYPE 1 : Prepared well for Board Exams

you need not to ask this question ,you are already prepared. You just needs some confidence and little bit of practice.

So, just last 56 year papers by setting time limit, and try improve score in each paper.

TYPE 2 : Are just like newly born, or just Now awaken from sleep.

Sorry , to say but. i hope you understood.

Maybe you can clear cut off of paper ,but its of no use except becoming eligible for Jee Advance.