Hi,
Some of the basic yet important tips to consider for preparation are:
1. Time Management : Do not waste time on a particular question. Move to the next question and try to solve easy questions rather than focusing and spending more time on solving more difficult question.
2. Understand basic concepts : It is really important to complete your NCERT books as these textbooks will help you to build your base and you can learn the basics. Always ensure that you are covering all topics of NCERT books well on time.
3. Work on your SPEED and ACCURACY- Try to make your own strategy to crack the exam. Enhance your skills and try to master analytical skills with conceptual understanding.

Practice a lot and focus on clearing your concepts.
Also choose to do group studies studying in a group you get chances to clear your concepts and queries.

Practice last year papers as they will give you an idea of how the exact paper can be.
Also focus on mock tests covering each section of VITEEE.

Hope this helps!