Hey no need to worry at all. Use your previous experience.
As exam time is approaching I would advise you to kindly observe the points below:
1. Do think positively as positive frame of mind is very important for a good preparation. Always cheer up yourself.
2. Prepare a proper study plan and study according to the same. Unstructured study without planning is a clog on good preparation.
3. Prepare a good revision schedule and follow the same strictly. Good revision is a key to success.
4. Do not change the books and notes quickly without sufficient reason. Stick to the notes and books selected earlier.
5. Also refer ICAI or ICSI study according to the attempt or exam.
6. Discuss the topics with your friend for better grip. A healthy discussion helps you recall provisions/contents in a much better way.
7. In CS and CA scanner plays an important role. So fully complete your scanner with the help of ICAI or ICSI suggested, as the case may be.
8. During study notes the imp topic or make short notes. Refer them later during revision.
9. Prepare short notes for frequently asked questions and revise them properly.
10. Have faith in your abilities and never underestimate your worth. Keep your confidence high bcoz self confidence is very important to succeed in life.
All the Best