COVID pandemic changed lives of all the people in the world and passengers are one among them. Whenever you travel you should follow certain guidelines for your safety. Firstly you should submit self-declaration form on the Air Suvidha portal 72 hours before the scheduled travel. They need to update a negative COVID-19 report.
Check out the latest guidelines: https://www.indianeagle.com/traveldiary/mumbai-latest-guidelines-for-international-travelers/
Tosh. I think malana village is closed now. stay one day in kasol and visit parvathy Valley after 5. it's so warm and cold. I drop my beer in the flowing water and I couldn't drink it after 5 minutes. it was so chilled. You can also trek to Kheer Ganga