Migrate Wordpress blog posts to Day One journaling app

I have a private wordpress website. I would like to migrate all posts, including media, from Wordpress into my Day One journaling app for archival purposes. I need someone who can work with exporting the data from wordpress, including photos, into the format that Day One needs for importing. The export would be a JSON file with accompanying photos folder. See link for example JSON File: https://help.dayoneapp.com/en/articles/1694437-importing-data-to-day-one A successful project would result in all my wordpress posts migrated into Day One with titles, dates, text, post categories (converted to Day One tags), and media imported and formatted consistently. Day One has a limit of 30 pictures per post, so I would need to know which posts had more than 30 pictures so that I can manually adjust.
If helpful, here is link to possible plugins that can be used. Remember I also need the media. https://jsnelders.com/Blog/2471/export-all-core-wordpress-data-posts-pages-attachments-comments-tags-categories-and-users-to-a-json-formatted-file/