You have to maintain the attendance cut off of 85%. Some lecturers are very supportive, who can help you with your issues. You need to maintain the class timings as I had few incidents where they didn’t allow to class if we were few minutes late but again depends on the professors. Sometimes they used to check the notes that we would maintain for each subject.
You can enjoy your life for 4 years. Attend a lot of fests of all departments and you would like it