I think https://accountants.intuit.com/support/en-us/help-article/import-export-data-files/import-tax-data-s... is what you might be looking for. Map the various lines of a spreadsheet to the various lines in a Schedule C. Lots of work, in my opinion. I don't know if the time you spend doing this will carry the import maps to the next year. In a way I HOPE NOT. You add a line to the spread sheet and it gets missed? 

I open the schedule C and start doing the input.  Each line has +  when you click on it, to open up for detail.  That way I can look back later for an audit and "see" where I got the numbers.