When you file your tax return, you are signing that the information provided is accurate and true. I recommend waiting until you have Form 1098-T, which is REQUIRED when you are claiming education credits.
Once you have a copy of Form 1098-T, you can always amend your return at a later date to receive the education credit.
See this TurboTax FAQ for deadline information on filing an amended return (1040X).
https://ttlc.intuit.com/replies/4231751
