Indian passport holder transiting through Kathmandu

Someone pls help!

I plan on traveling to New Delhi from China via Nepal. Since there are no connecting flights, I am planning to book a ticket from China to Kathmandu first and then book a different flight from Kathmandu to New Delhi within the next 8 hrs.

As such, I have three questions:

1) Is transiting still allowed for Indian citizens in Kathmandu airport?

2) Since I will have to collect the baggage on my own and proceed to the next flight departure, would they ask me to get quarantined?

3) What all procedures do I need to complete before traveling to Nepal? (Other than RT PCR tests)