Dear student,
Direct admission to the 3rd year of B. Tech is not possible. There is a provision called Lateral Entry, which is applicable to move colleges from the 1st year to the 2nd year of college. Since you have not mentioned your educational background, we cannot suggest you the most valid option.
The way a Lateral entry works is that you apply to a different college at the end of/ after completing the first year and if you get the required marks as cited by the college, you can directly apply. In some cases, a separate exam for Lateral Entry is also conducted.
Since you are in you are in your 2nd year already, a transfer seems difficult. However, if you are okay to repeat your second year, then you may give it s shot.
Colleges offering Lateral Entry in Mechanical Engineering:
When the AP PGECET councelling for m pharmacy students
Mujhe admission mil sakta hai chemical engineering mai and fees kitni hai
Admition starting and closing date