I'm not familiar with Georgia Zell Miller Scholarship, particularly. You may want to do some more research.
That said, the answer to your question appears to be in the question itself.
"However, I am wondering if this policy can apply to the Georgia Zell Miller Scholarship, which is a tuition-only scholarship." I find this wording, at the Zell website, "Scholarship award amount to be applied toward standard undergraduate tuition, up to a maximum of 15 hours, for the specific number of hours enrolled, whether full time or part time." https://www.gafutures.org/hope-state-aid-programs/hope-zell-miller-scholarships/zell-miller-scholars...
The rule is: you may not re-allocate the scholarship money, if the conditions of the grant are that it be used for qualified expenses (tuition). If the school’s billing statement show’s the Zell payment being directly applied to tuition, that would be a strong indicator.
