Yes, you can use TurboTax to amend your 2018 tax return to claim the college tuition write-off that has been resurrected by the Taxpayer Certainty and Disaster Relief Act of 2019.
If you did not use TurboTax to file your 2018 tax return you can still use TurboTax to amend your 2018 tax return.
This link is to the TurboTax help page, How to amend (change or correct) a return you already filed and will provide you with the information you need on how to amend your 2018 tax return.
This link is to the TurboTax Blog page, Congress Extends Expired Tax Breaks Helping You Keep More Money in Your Pocket and has additional information on the Taxpayer Certainty and Disaster Relief Act of 2019 that you may find useful.