Do I Need to Continue to the 4-Year Degree to Clear My Backlogs?

I am currently pursuing a BSc and am in the 5th semester. I admit that I have been very careless with my studies. I have an ER in one subject from the 1st semester and failed the theory exams in almost every subject. In the 2nd semester, I have a backlog in Hindi and again failed the theory exams. I have not appeared for any exams in the 3rd and 4th semesters.

I recently decided to clear all my backlogs and filled out the examination form, but due to carelessness, I have again skipped three exams from the 5th semester. However, now I genuinely want to change and improve.

My question is:
After completing the 6th semester, if I choose the exit option and do not continue to the 4-year degree program, will I still be allowed to appear for my backlog exams later? Or do I need to continue to the 4-year degree in order to clear all my backlog papers?