How do I claim my 529 contributions on my Illinois return? TurboTax doesn't seem to have an option for this.

I contributed to a BrightStart529 in 2024 and that is deductible from Illinois income up to $20,000 (joint), but TurboTax doesn't have an option for claiming this. I need to itemize it on IL 1040 Schedule M, but I don't know how to do that through TurboTax. Thank you!