Hello,
To prepare for your Class 10 exam, focus on your NCERT textbooks, practice with sample papers and revise important formulas, concepts from key chapters. Create a schedule to allocate specific time slots for each subject. I am attaching a link for syllabus and Preparation tips for your exam. Kindly check the below link.
https://school.careers360.com/boards/cbse/cbse-class-10-preparation-tips
I hope this helps you.