Hello student

hope you are doing well and safe. With reference to your query,  I would glad inform you that minimum duration of the bachelors course is 3 years in india.  If you have fail in the 3rd semester of the exam then you have to appear for that exams in 5 semester and if you fail in some subjects in 4th semester then you have to appear in 6th semester , but for getting the degree you have to clear all the backlogs

Hope you found this answer informative. Best wishes for your future