Hello Lekshmi,

B.tech is a 4 year program as you know, and you discontinued it in your 3rd year, with some backlogs in previous semesters. The minimum duration of his course is 4 years and maximum duration is 6-8 years according to college policies. After completion of the course candidates having backlogs are given 2-4 years to pass there exams. If a candidate is unable to pass the exams than the application become invalid.

I would advise you to get in contact with your college because the best help you can find will be of your college itself. 

Hope I answered you.

Thank you,

All the best

Hii Lekshmi

There are some college which allow its student to complete graduation in 6 Years. So Please specify the college and also you sholud enquire about this in your respective college.

Hopet this Helps.