Don't worry,
Getting expemption by focusing on one subject chances are 50%
Do not try for exemption in your mind.
Just relax leave all your thoughts like my attempt in may,preparation not completed etc...
These thoughts will not help you in any way.
For theory papers follow newspaper techinique study(Read the subject like newspaper)
For practicle subjects selective study (pick the important baseed on previous attempts allocation of marks)
Do not answer for marks in exam,try to write what you know about the question sincerly
In CA exams marks are not given for aorrect answers.
Marks awarded based on your attempt to answer(How you presented the answers)
Go through practice manuals ,observe the pattren for answering practicle subjects.
For theory answers should be in points form and anot in paragarphs.
Answers should be concise and straight in theory.
ALL THE BEST