Hi swamy,

     Congratulations on placing yourself in the position of rank 500. For your information, both OU and JNTU offers part time MBA courses. Although many recognized top colleges do not offer part time course, these two are best institutes where you can do part time MBA. Whereas there are other private institutions which offers this course but are not well recognized and doing a degree there gives you no use. 

Be confident and try your chances in these colleges as you have better chances to get a seat there. Left is for you to choose between these two. 

To know more about part time MBA in JNTU refer https://www.careers360.com/colleges/jntuh-school-of-management-studies-hyderabad/mba-part-time-course

To know more about part time mba colleges refer https://bschool.careers360.com/colleges/list-of-part-time-mba-colleges-in-hyderabad

Hope this helps!! Do upvote!!

All the best!!