You can score well if your concepts are clear. Reading NCERT textbooks of 11th and 12th standard of Physics, Mathematics and Chemistry helps a lot. Since time is less it would be difficult to complete everything so see which chapters are your strength and do them thoroughly .

Practice as many multiple choice questions as you can. In 10 days making notes becomes difficult so remember things well. Practice numericals for all the three subjects. Give equal attention to every subject as they are all equally important.

Now scoring 100+ in 10 days is a bit difficult. It depends upon how much have you studied before. Try your best but don't be stressed. Stress only brings problems. 

JEE Mains would again be held in April so you can try for it too.

If you still have any queries feel free to ask in the comment section down below.