Hi there!

It is sad to hear about the accident and I hope you are fine now. You might have missed some of the chapters but you should at least try because you never know what comes out of what. There is still sometime left in board exams and boards aren't that tough so if you study with full concentration and will power you might actually score really good. And it isn't that difficult to score a 90% if you have will power and strength to do so. And trying isn't bad, being positive has always helped people to overcome the problems and I believe you would actually score nice if you try as you seem to be a hard working and conceenec student. I wish you luck. All the best!