Can I change from WPBakery (FKA Visual Composer) to Gutenberg?
Yes of course, changing from WPBakery to Gutenberg is not rocket science, with web design practices, you can easily score above 90 in Google PageSpeed Insights.
10 steps to convert WPBakery to Gutenberg
To convert from WPBakery to Gutenberg, you need to remove those miserable short-code from WPBakery and multipurpose theme. And rebuild the whole website again with lightweight theme like Blocksy and Gutenberg block editor. The migration usually took about a week.
Step 1: Migrated and rebuild in staging site.
Always use staging site for development. Unless your site had lots of problem that is unable to show to public, else I would not use "Under Construction".
Step 2. Remove WPBakery Page Builder and Multipurpose Theme
Remove all the multipurpose theme, WPBakery and any plugin that is related to WPBakery.
Step 3. Remove WPBakery Page Builder (FKA Visual Composer) Divi shortcodes from content
When you remove the WPBakery Page Builder, it will leave you tons of shortcode with content and is very time-consuming to go through page by page to remove.
Shortcode Cleaner Pro saves me lots of time & effect. You can easily remove all the shortcode in minutes.
Step 4. Rebuild header & footer with lightweight theme