I need tips for comedk

I'm jee dropper with decent jee preparation but a very bad jee percentile. Giving comedk this year. What's the difficulty level of comedk? Is it worth it to sit and study all the jee mains deleted syllabus on surface level right now? Or should I just focus on revision

I just registered for it as a relative told me to, but I don't know anything about the exam. What's the exam duration and marking scheme? Can you switch between subjects during the exam?

Also do 11th and 12th topics have equal weightage?