Moved from Illinois to Ohio - Ohio state including Illinois earnings in their state tax return

I am helping my adult son with his taxes. He lived in Illinois Jan - May of 2023 and earned W-2 income from an Illinois company. He lived in Ohio from June - Dec 2023 and earned other income from an Ohio source. While completing the Ohio state TT taxes module, it is pulling the Illinois W-2 income from the federal Form 1040. There is nowhere I can find that is allowing us to remove that portion of the income. In the Ohio module, there is a section titled "Income Allocations" that allows us to designate which portion of "other income" was earned in Ohio and which portion of "nonbusiness interest and dividend income" was earned in Ohio, but nowhere do we have the option to allocate the full W-2 income to Illinois and not Ohio.  The Illinois state module allowed us to designate all of those earnings to Illinois, but this did not affect Ohio. Any suggestions? Thanks in advance!