Need suggestions for a 2 day trip to ooty from Isha Coimbatore

I'll stay at Isha on 24 and 25 March and checkout on 26 March 6 AM. My return train is on 28 March 12 Pm at Coimbatore jn. I don't have a plan, but think 2 days would be sufficient for Ooty. How do I best utilize them ?