Hello aspirant

If you have not completed your class xi physics syllabus then do not worry, don't be panic at this  time .

Now its time to focus on important topics in all subjects . Look if you are strong in biology then complete biology first and then you may go for important topics in physics and chemistry,  instead of completing syllabus,  I will suggest you to start revising what you have studied till now .

Whatever is left let it be. If you find biology interesting then revise all the topics , if you don't have much time you can just ho through numerical in physics and chemistry , learn formulas.

Meditation is must at this time to keep yourself calm.

Be confident .

All the best !