Nervous and stressed

Hi, I'm giving CA final both groups and since around 50 days are left for the exams, at times when I'm studying I get nervous with just the vastness of the syllabus and it gets difficult to concentrate with the stress.

I'm trying to cover the Books, supplementary notes from classes and PM for all subjects and going at a good pace too. It is alright to manage the studies if I can manage the nervousness. What I do about that?