Hello

The registration dates for B.Tech entrance exams usually start early in the year, so you must keep checking official websites. Most national exams like JEE Main open their forms between January and February. Private universities such as VIT, SRM, and BITS release applications much earlier, often starting in November. State-level exams vary, but they mostly begin around March to May.

Just click here, and it will provide you with the list of the top 10 B.Tech entrance examinations.

https://engineering.careers360.com/articles/top-engineering-entrance-exams-in-india

These are the upcoming examinations, and you can also check it also so that you can enrol yourself. : Check from here