Is there a way to make background overlay ignore part of the background?

I have a prototype in Figma where when I click on the menu button on the top right of my header, a vertical navigation menu slides in from the right. This using the open overlay prototype function. While this works fine, the background overlay covers the whole background when the menu is activated, including the header. Is there a way for me to make it so that the background blur only goes from below the header and down the page?

Add your header as part of the overlay.