hello aspirant,

first of all , do not worry and do not take pressure on studies, keep this in mind that you have got enough time to study for the boards and just go with the flow.

PCM stream is the best stream i suppose, there's a lot of possibilities out there in the world with this stream .

tips on how to study-

keep referring to your NCERT books , they will help you the most.

keep making notes all the time.

if you feel like you have completed the chapter properly, visit reference books for your help.

it's not possible in this outbreak that you have joined any coaching, so , online classes must be going, take it very seriously and ask your doubts during the class

read the chapter beforehand , it will help you get your concepts clear.

sleep for atleast 6-7 hours a day,

sleeping is also necessary, do keep in mind.

hope that helps

all the best