Hi Yasmin....

These are a few steps to prepare for WBJEE:

• Conceptual Clarity- Clear all the basic concepts of all the chapters.
•  Take mock tests and solve previous year questions.
•  Improve your concentration and Application skills.
•  Study with patience and attention
•  Revise regularly and have formula on your tips
•  Keep calm and stay fit
•  Regularly analyze your performance
•  Make daily/weekly targets for yourself.
•  Have proper sleep and diet.
•  Prepare smartly as all subjects are important.
•  Believe in yourself

Kindly go through the below link for further clarification:

https://engineering.careers360.com/articles/how-prepare-for-wbjee-2019

Hope this helps......Thank u