ComedK is an entrance exam which is held in the state of Karnataka for top government as well as some private colleges there for Engineering, Medical and Dental sciences. First you have to understand that the examination.

The exam is usually held in the month of May. Students all over India are eligible for the test. Now comes the exam part. The paper is divided jyoi 3 sections, Physics, chemistry, and mathematics, each having 60 questions, totalling to 180 questions. For every correct answer 1 mark is awarded and there is no negative marking. So one pro tip here will be not to leave the OMR sheet blank at any question. Furthermore, the time duration is 3 hours divided into 2 hours of combined physics and chemistry paper and 1 hour of mathematics paper.

The syllabus for the exam is the entire syllabus in 10+2/ XII. The strength of questions are from medium to tough(as it was during my time). 

Now comes the tip part. I didn't got any tips before and did how I prepared for JEE mains. But the level of COMEDK is much less as compared to JEE. So I would say in between Ncert and JEE level. It will help you alot. Time management is very important as the Physics questions were tougher at my time. Get thorough with PCM, solve previous year's papers. Take mock test. And yes again dontd leave any question blank. Sometimes guess work might do the trick and will be enough to fetch extra 6-7 marks than no marks. So take care of that. 

Thank you.