Found a great little util for backing up dynamodb to s3 from dynamodb streams, dynamodb-backup-restore.
It's designed to store each event to an S3 bucket and allow you to restore your database from the list of events.
You can add it to your serverless.yml
and create a simple function.
const Backup = require('dynamodb-backup-restore').Backup;
module.exports.handler = (event, context, callback) => {