There isn't really an easy way to do it unfortunately. The following steps are probably the easiest.
1) Download & Install Elementor from the
official WordPress site. As of March 2020 the site will not crush if you have both plugins activated.
2) Create a test page with Elementor and add several standard shortcodes on the page. Make sure the theme you are using doesn’t conflict with Elementor and its elements. If you notice any issues, fix your theme js/css.
3) Disable WPBakery and use
ShortCode cleaner to sweep out the shortcodes created by this builder.
4) User Elementor’s editor to rebuild the Header & Footer of your site.
5) Rebuild your pages with Elementor.
6) Re-save your posts with Elementor.
7) Go through your site and make the final touch ups.
(Steps copied from another site)
