how difficult is comedk xam compared to SRM xam...

Hi, Both are not that difficult to attempt. You can prepare keeping the below points into consideration.
> Know the syllabus. Focus on marking scheme and weight age of the topics.
> Know the proper syllabus and create a time table for it. Prioritize your work and topics.
>Attempt previous year papers
>Give sectional and full length mocks.
>Work on time management skills, your speed and accuracy.
Good Luck!