After lunch visit the Hidimba Devi Temple, locally known as Dhungari Temple, also known variously as the Hadimba Temple, is located in Manāli. This is 10-15 mins away from Old Manali and you can walk towards it.
Next destination is sissu waterfall. After a 30 mins trek visit this beautiful waterfall and enjoy the cool breeze. Then stop at a small shop to have Maggie
Restaurant
Last day do cafe hopping and enjoy amazing food. Then go back to Delhi by evening.