First & Final 1041 return for my parent's trust with 645 election for fiscal year. Mother died mid-Nov 2022. First time preparing trust return and I didn't realize fiscal year must end October 31, 2023 and didn't realize 1041-T had to be filed within first 65 days after fiscal year end.  If fiscal year end can be 11/23/23, I'm still within the deadline. Suggestions?