There are no “weeks”

Is it possible to have the output display in weeks? For example with a plant, we say “The tomato plant is 12 weeks old”. I tried to change it to week or weeks, but that did not work. The first one is a correct output and is what I am currently using, but would love to be able to do the weeks.

I was planted [DateCounter startDate=”2020-07-01″ endDate=”now” format=”Days”] days ago.

I am [DateCounter startDate=”2020-07-01″ endDate=”now” format=”Weeks”] weeks old.