Yes, it sounds like you would not be eligible for the AOTC for 2024. This credit is to help defray 'out of pocket' expenses you incurred, and since his scholarships covered his tuition and fees, there's no indication of additional expenses you incurred in 2024.
You can enter 'Other Education Expenses' for books, other fees, etc. that are not included in the Tuition amount in Box 1 of the 1098-T, which may qualify you for a credit.
Here's more detailed info on the American Opportunity Credit.
@gator593

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