Engineer

It would be good if you opt for MBA (Operations). That will help you to get a wider knowledge of the subjects with practical exposure.

You are advice to appear for Joint Admission Test conducted by Indian Maritimes University Chennai to seek admission in leading Maine Engineering colleges in India.

Ratnesh, if you are weak in maths, you can go for some of the branches that are meant for PCB students. You have B.Tech in Biotech., Food Tech., Biomedical engineering., Agritech., etc for them. These are some of the branches that have come into being because of our changing lifestyle, stress upon what we eat, and various health issues. They all have ample scope and good job opportunities.
Check the websites of some of the good universities like VIT, LPU, Amity, etc., that are offering these different branches. Students are offered ample exposure along with good placements.
Good luck.

You can check the general cutoff to get WAT-PI call on the below link - http://www.iimidr.ac.in/academic-programmes/post-graduate-program-in-management/pgp-indore-admissions-details/

If you are not attending the regular class, you have to get self study or you can get help from your batch mate to start your studies or contact with your juniors for notes and help.