It's not possible
What exactly is missing?
1 person found this helpful
Here you can read all you need to do to convert an Android app to an instant app.
How to Create Instant app from Existing App - Knowledge Transfer
To do that in a Cordova/Phonegap app you will need a bunch of plugins and hooks that nobody has created yet, and it's even possible that not all that is possible from plugins and hooks, so you might need to end up doing things manually from Android Studio, and you have to change your app to become a module, that might break the app, so it's probably not possible to do it.