ITR for deceased in subsequent year

Hello experts,

Need your guidance for ITR efiling for current year.

My father had passed away in FY2021-2022, and my mother had filed the return as legal heir.

He still had some savings account, FD interest and minor dividend of shares in FY 2022-23 which is reflected in his AIS.

Have below queries on this year ITR filing for the same:

1) How is my dad income supposed to be reported in ITR1 of my mother this year? Should it be added in my mom's FD and savings account interest and cumulative amount be reported ? 

Or the income must be mentioned seperately in some other section?

2) Does the AIS of my dad needs to be intervened?

Thanks in advance.

Regards,

Rakhee