This year I got Jee main rank 9135, and I will get electrical engg. in PEC, which is a good state college. I had BITSAT score 304 and was allotted biotech at Pilani which I dont want to do. 95.2% in CBSE, and didnt do very well in JEE ADv. The reason was bad health and 'adverse' paper. I know it wasn't due to lack of calibre. I'm considering taking a partial drop, i.e. joining PEC and taking JEE exam again. I won't take coaching again as I've studied everything, and have notes from Resonance and fiitjee. I need a proper study plan for the year. HELP!!!

you need to measure your performance by your study planfor the day. You need to establish definite goals to be achieved in a day, in a week, and in a month.
Your daily goals will need to include:
topics you will study,
preparing notes for the topics you have studied,
solve practice questions or numericals related to the topics, and
solve at least two practice papers, sample papers, mock tests, or IIT JEE past year papers a day.
It used to take me 5-7 hours to complete my daily goals. Use your clock only to see how much time you took to solve the tests.
good luck!