Central Board Of Secondary Education [CBSE] — Regarding screen time given by our school.

Sir, I writing this letter with great pain. As online classes started at first it was great but now it is getting a lot worse. Our class time is morning 9:00 to evening 3:00. It's very irritating I often get headaches. Even on offline classes we didn't have this much work to do as works were done on class. But in online classes teachers would take class and would publish there note books soon after classes finished. It's not only my problem . I am writing this behalf of many children as we are falling behind in academics . I hope you will help reduce screen time and make it more fun learning and effective.
Thank you