Firebase Backend

I have an iPhone App available in the App Store, the back end of this app is being hosted in Bluehost. There is an api that works with the app. I would like to migrate the backend of the app to Firebase and make sure everything is still working as expected. The only additional change would be to remove the Facebook Login Option and replace by Apple Sign In and Google Sign In since those two options work well at Firebase. Here is the link for the app: https://apps.apple.com/us/app/remindmenot2/id1102117342 And the description of how the app works and the api documentation