Don't enter the 1099-Q, at all. it is only an informational document and is not required to be reported on your tax return.
On form 1099-Q, instructions to the recipient reads: "Nontaxable distributions from CESAs and QTPs are not required to be reported on your income tax return. You must determine the taxability of any distribution."
If your student-beneficiary has sufficient educational expenses, including room & board to cover the distribution. When the box 1 amount on form 1099-Q is fully covered by expenses, TurboTax will enter nothing about the 1099-Q on the actual tax forms. But, it will prepare a 1099-Q worksheet for your records, in case of an IRS inquiry. But, your own records are adequate for that.
