First of all I applaud your efforts and hope you well.
I was beta testing the plugin and had a few issues that I though I would share with you. First is that I am using a WP multi-site install and am using the Domain Mapping plugin. I tried to curl the "pretty" url (example.com/wp-json.php/) and got a 404 header. So I then pointed the curl to the try URL of that blog and got the 200 header as expected. This is totally understandable but though you should know about it.
Second, in class-wp-json-posts.php LINE 520 I got there that function createFromFormat was not defined. This was helpful to remind me to upgrade PHP but it will cause a lot of issues for users that wont know to do that.
Thanks for you hard work on this plugin!