hi mohana,

Last date of submitting the application form 30 April 2020. You have to submit your KVPY/JEE Advanced/JEE Mains/NEET exam result within 1 week when they are out.

For further counselling process IISc will give information later.

This is the latest information from IIsc till now. (https://www.iisc.ac.in/wp-content/uploads/2020/01/UG-advertisement-2020.pdf)

I hope this answer will help.
All the best for the future!!