Conditional formatting with multiple rules

Registration date
Friday December 1, 2017
Last seen
December 30, 2017

This is probably really simple, but I can't get it to work! I need excel to change a cell to red if the due date on that cell is before today's date (date on that cell will change based on the date that is input on another cell), but only if the cell next to it has been left blank.

So if cell G2 has had a comment written on it, then cell H2 should be clear. If G2 has been left blank then H2 should be red if today is past the date on the cell. Hope that makes sense.

I've used this formula to determine if cell is past due date =$H$2<TODAY() and it would format the cell red.