Hello,

The search form is responsive, you can change the flex row width to change the width of the wrapping column and it would narrow the search: https://xtemos.com/docs/woodmart/header-builder/header-rows-flex-layouts/

You can change the layout in the row settings: https://xtemos.com/docs/woodmart/header-builder/header-rows-columns-configuration/

I cannot help without site URL and screen of what you want to change.

Best Regards