Magento 2.3 - How to update Migrated Data?

I already migrated Magento 1 data to Magento 2.3.4, during development we got few orders placed in Magento 1 as well as new customers registered in Magento 1. How to update the migration data i mean how to sync as per date data to Magento 2.3.4? Is any advice for this case?