You should add the information from the Form 1098-T to your return as its possible you could qualify for an education credit (it's also possible you could have scholarship income to report). But, you won't be able to amend it right now (assuming that your return actually gets accepted and processed - if it's rejected for any reason, then you can add it before you resubmit).
The Form 1040X will not be ready until 1/31/19 but TurboTax will walk you through the amendment process and I have included a link below that will help you get started. However, you are going to want to wait until you have actually received your first refund before you start the amendment (this is the advice that the IRS gives). This is because if there are any other issues in your return or forms that come up while the IRS is processing your return, you do not want to have to amend a second time. It is a cumbersome process.
Click
here for instructions on how to file an amended return. During the amendment process, you will be prompted with a list of items you would like to add and Form 1098-T will be one of them (or you can use the search above).