I input 2017 in my downloaded Turbo Tax. Then, I decided to use my CPA and he filed my return. Can I use the Turbo Tax 2017 as a starting point for doing my 2018 taxes?

I verified that my Turbo Tax agreed to my CPA’s return.  I want to do my own 2018 taxes and would like to use the 2017 that I already input.  Can I close out the 2017 and use for 2018?