Switched from sole prop to LLC mid year, do I file 1 or 2 Schedule C's?

I was operating under my full legal name for some consulting since end of 2018. Mid 2019, I switched to a single member LLC with a different business name.

 

Some questions:

1. If everything else stayed the same except for legally switching to the LLC using a different name, do I check the box in Turbotax for "I started (or acquired) my business in 2019?" If so, do I use the date I officially formed the LLC as the start date?

 

2. Is it okay to just complete one schedule C using the new LLC business name for the whole year? Or do I need to report two schedule C's as though I had 2 separate businesses in 2019?

 

I am doing the same type of work as I was prior to switching to an LLC, have no employees, and received no 1099s during the year. I use Quickbooks online and have recorded everything under the same "business" for all of 2019.

 

Thanks in advance!