I have discontinued my b.tech in 3rd year of my graduation in 2018. What are the possibile way to study

Hello there. Hope you are doing good. I would like to tell you that since you have not completed your graduation, you can look for Diploma courses that suits your interest. If you feel you can do better in some other field, then you can look for its diploma courses near your location and start a new journey from there. If you do not want to switch to any other field and continue to study in your field only, then you can find diplomas of your B.tech specialization.

I hope you found this answer helpful. Good luck for your future.