Yes. Either use the TurboTax desktop editions for 2018 to finish the tax return started with the online editions or use the IRS website for the free forms and schedules to complete the federal tax return manually.
See this TurboTax support FAQ for completing a 2018 tax return originally started using the online editions - https://ttlc.intuit.com/community/prior-year-return/help/how-do-i-finish-a-prior-year-return-that-i-...
Go to this IRS website for free federal forms, schedules and instructions - https://apps.irs.gov/app/picklist/list/priorFormPublication.html
