Save a post as draft
Yes, you can work on a blog post as a draft and publish it when it’s ready.
In order to unpublish a blog post, select your blog page and click on New post. Give this new post a title and uncheck the box Published in the settings at the bottom of the post. You can now start adding content to your post.
When you are logged in as Admin you can always view and edit your unpublished posts but they will not be visible for visitors. When your post is ready to be published, check the box Published.