The best person to help you on this board will be @pk
In general, you would only need to file a 1040-NR to report and pay US tax on income that was US-sourced but paid to you after you expatriated. You do not need to report foreign income on a 1040-NR. Sourcing of income is described here.
https://www.irs.gov/individuals/international-taxpayers/nonresident-aliens-sourcing-of-income
So you need a form 1040 that reports and pays tax on all your world-wide income from 1/1/25 through the relinquish date, and a form 1040-NR that reports and pays US tax on only US-source income paid after the relinquish date, if you have any. The instructions say to file the 1040-NR with the form 1040 as an attachment.
Turbotax does not handle this situation. It can prepare the 1040, but not the 1040-NR, and it can't file for you. You might be able to use Turbotax to prepare the 1040 portion, then have someone else prepare the 1040-NR, then combine them and mail them together. Or see a tax pro who can help you.
