Split Mortgage Interest between Airbnb room, consulting office and home

Hello Again

 

I would like to confirm if the way I am assigning home mortgage interest is correct:

 

Assuming I have 10K on mortgage interest and Airbnb room is 10% of the space and consulting another 10%.

 

I am entering 1K on Schedule E and then another 1K on Schedule C. Then for Schedule A, I entered 8K.

 

I noticed on Schedule C, there is a field for Excessive Mortgage Interest.  Can someone advise if I need to enter something on this field?

 

Thanks in advance.