• Make sure that all your basic concepts are already clear.
• Plan should be prepared depending on your strength and weakness i.e. how much hours you can study in a day.
• Add some interesting elements in your plan. Change your revision time table or style.
• Students gets tired reading the hard copy of book material, they should make use of IIT JEE online video lectures to enhance their preparation.
• Every human body and brain needs a break after certain intervals, so add break in your study plan.
• Create small notes for quick revision and save time during preparations.

• Hang big calendar in your room, so you write daily study updates.
• Write your schedule. Plan for study, revision and online Mock test.
• Make a weekly schedule like deadlines for exam, revision.
• You can also write your day to day task. Include your routine, study time.
• You can take a special time for academic activities like watching online video lectures.
• Allot time for other activities like sports, entertainment and exercise.

• Learn Chemistry from NCERT Textbook.
• Inorganic Chemistry from NCERT Textbook.
• Prefer RD Sharma for maths.
• Learn all the formulas.
• Be familiar with how to apply formulas while attempting the questions.
• Be clear with the fundamentals.
• Don't go beyond the syllabus.
• Attempt last year question papers.
• Solve problems (JEE last year's question papers)
• Solve atleast five sample papers seriously considering it as JEE-Mains.
• Always be cool & confident

YUP! As of now, you have almost 2 moths left for JEE Mains preparation (and 1 month  if you're going to appear for board exams).
Start by Chopping down your Sleeping and resting time. Don't just sit or lie idle.
Take conceptual Books (like 'Concepts of Physics By HC Verma') and start reading it while understanding the concepts at the same time.
Do the Same for chemistry (use Chemistry NCERT Books).
Don't try to grasp every single Thing! There are a few chapters from which 15-17 Questions will be apearing in Every 3 Subjects, Focus on those chapters/concepts.

Also, try to mugg up every formula. You'll thank me later.

BUT FOR MATHEMATICS PART, YOU NEED TO START PRACTICE RIGHT AFTER READING THIS!
ANALYZE YOURSELF FROM WHERE DO MOST OF THE QUESTIONS COME AND START PRACTISING AVERAGE TO GOOD QUALITY QUESTIONS. STOP WASTING TIME ON NCERT MATHEMATICS :P (it's basically worthless).

and remember, THERE'S NO SHORTCUT ;)
There are Aspirants with burning fire insinde them right now coz they've been practicing from last couple of years, so definitely you can't compete with them.
IF YOU STILL WANT TO CLEAR JEE MANIS, GET YOU A$$ TO WORK!
(and this was NOT a shortcut and you'll know why. Just Start!)