Auto choosing form selection based on user interaction

I am working with a group on revising their website and in one of the sections for a new facility, there is a form for the days of the week and hours of operations.

They also have a drop down choice to set the row to Open or Closed for that day. I am advocating for setting that choice to open automatically when a user begins entering hours into one of the daily slots.

Others are worried that we will be deciding user intent and it should not be done.

I'm wondering if this should be considered a helpful, time saving function or if it could be considered intrusive on user choice.

If you have any links to UX articles or research, that would be very helpful as well.