In 10 years, a lot of things might have changed with the fund. Changes with managers, AUM increase so tilt towards large cap. Look at the fund returns in calendar years, also check the rolling returns, and if you are satisfied, you can think of staying.
How big is 1 lakh to you? What will you do with the proceeds if you sell? Do you have any other ELSS funds? Do you need ELSS? Many questions, answers them to yourself and you can take a decision.