I sense F* coming up. You need a minimum of 75% attendance in every semester in all classes and labs. If it is because of medical issues or due to participation in events where you represent the institute, you can submit a medical form or application which will be valid only if you have a minimum of 65% attendance.
In the case of an F* you have to repeat the course.. not an exciting prospect right?
P.S : The classrooms have been renovated recently, they are more comfortable to take a nap than your hostel rooms. Just go, at-least for the sake of attendance.