Since you've one more year start from the basics.Initially brush up all your basics from NCERT text books and then start practicing previous year questions and attend mock tests so that you will get a good grasp over the types of questions that will be asked and you can get ready for the upcoming challenge.Try to solve atlest a single mock question paper daily and then success will be yours.Good luck!!

just go through the sylabus

try to go through sub topics

plan accordingly

understanding the subtopics is necessary

]go through all the formulas related to it

stay stress free

atleast spend 4 hours per day while  preapring for it

ask for your seniors help or help from your relations

go through the previous year paper

i hope this helps you

hope for the best

and

all the very best !!!!