I do not know the restrictions and exclusions, but it seems NYS has a $10,000 state tax deduction for 529 plans. Assuming the waiting period for withdrawals is minimal, this is effect would enable a significant amount of tuition to be state-tax deductible.
From the NYS 529 Plan website
How soon can I begin making withdrawals?
You may make withdrawals at any time, taking into consideration the following guidelines:
•Contributions you make by check, recurring contributions, or electronic bank transfer will be available for withdrawal after seven business days.
•If you request a withdrawal by check at the same time you change your mailing address, the withdrawal will be held for nine business days.
•If you add or change bank information, you need to allow 15 days for withdrawals by electronic transfer
https://www.nysaves.org/home/faqs-managing-your-account.html#how-soonAs the rules are today you can contribute today, withdraw tomorrow to pay qualified tuition (as of now only for collage) and receive a NYS tax deduction.