Last report week as default filter

Hi there. 

My report has 3 slicers, one for reporting year, reporting month and reporting week.

All come from the same exact date field.

Now, when the page loads, i'd like my report to be filtered by the very last reporting week, nothing else.

If I select this in the editor, save and publish it works. But I'd like this to be automatic instead of manually selecting it in the editor.

Can this be done?