Is it possible to sync Webflow website with other CMS? (Get and update Collection Items)

What I would like to do is to create custom CMS, that would allow to edit Webflow sites, but at this moment it’s impossible to export Collections, so I want to know if it’s possible to retrieve and display Collections in my CMS with API and also add new and edit existing Webflow Collection Items in my CMS, so that they are created and updated in Webflow available Collections?

And another question: Webflow doesn’t allow to export Collection Pages, so it there any way to export or get them to my CMS?