When claiming mortgage expense in Schedule E, How to claim the mortgage personal portion on ScheduleA 8B (1098 not reported to me)

Hi everyone,

I rented out my primary residence, and I claim the mortgage interest on Schedule E.

In Schedule E I enter full amount, and Turbotax split the rental vs personal portion for me.

I saw that Turbo tax set the personal portion on Schedule A 8a.

However, the mortgage interest is reported on my gf's 1098, so I have to put it in line 8b.

Is there an option I can change from 8a to 8b?

Thanks!