How to tax a primary residence converted to rental last September?

We bought a new primary residence last July and rented our old one (which has been our primary residence for 10 years) in September.

How to reflect the above in TT premier online? I guess the 2021 real estate tax and mortgage interest for our old residence need to be split  to reflect  the primary-residence period and the post-primary-residence period.

TurboTax premier online doesn’t provide guidance on how to handle the above scenario. 

 

Pls help out 

 

thanks!

michael