How to do more focus on study in lockdown?

Dear student 
Your online classes must be going on, so attend every class with utmost priority. 
Then revise the topics taught to you in online classes.
You can ask and discuss your doubts with your teacher. I suggest you not to waste time during this lockdown period. 
If you have any doubt just ask here on the forum and our experts will try to help you out as soon as possible. 
Regards