Only had 3 days of rental income 2021. How should I file taxes?

[Jeffrey Suarez]

Purchased a vacation home late last year in Bullhead ( no option on location for Riverfront cities...need mods involved)

We managed to get the place rental ready in less than a month and squeezed a renter in. 

3 days of rental income from airbnb.  In 2022 Four months solid booked so far. 

We want to use rental income from this property to qualify for another property later this year. How do we file to have this qualified by an underwriter?

Since it is under 14 days rented we are being asked to file this under "uncommon income" or "other income" instead of schedule E.