You can plan for Jibhi. Or if you wish to get the most peaceful of Himachal I would suggest you to go for Kaza. But this will require one night hault journey at Pooh. But mind my words you will not be disappointed once you reach Kaza. I am considering you starting from Shimla.
You can plan your trip to Narkanda, which is mere 60-km drive from Shimla. In this stunningly beautiful hill station, far from daily hustle bustle of city lives, you will find white winters, summer sunshines, and beautiful monsoon with gloomy skies and smoky woods. Let me know if you are planning to visit this place, I will be happy to recommend you a to-do list for the same 😊
McLeod Ganj and Dharamshala Triund Trek is closed but the alternative Trek in McLeod Ganj is still worth it. The Trek will take around half a day, then you can wish to spend the night there in tents. A lot of other travellers also come mostly through agents. Next morning, you can travel up to the snowline. In Dharamshala,10kms from McLeod, you can visit the cricket stadium or experience paragliding and zip lining.
So that's your 3 day trip. Happy journey:)