Yes,

You can do 3 years LLB Course as that requires a minimum eligibility of :
Successful completion of graduation in any discipline.
Minimum aggregate marks in graduation are required for general category and the marks are bit relaxed for reserved categories. However, few institutions set a criteria as to the minimum marks required in graduation and most importantly their is no age limit
There is also a criterion for minimum marks required in graduation which may vary from institute to institute.
There is no age limit for taking admission in this course.

This link will provide you the details of 3 year LLB course and various entrance exam for it:
https://law.careers360.com/articles/9564-law-entrance-tests

All the best

Banaras Hindu University Undergraduate Entrance Test

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