Migration of huge amount of SharePoint Site involves careful planning in particular, where you have to migrate selective files and folders. Choosing the appropriate data from the outset can be helpful for such an undertaking.

The Kernel Migrator for SharePoint software enables you to choose selective migration and allows you to filter out your data through date, file, and user filters. This tool has got features for batch migration, scheduled migrations, and incremental migration where the newly created and modified data gets migrated without migrating the unchanged data again and again.

Migrator for SharePoint provides migration reporting feature which helps you to track and review the outcomes. I would advise you to test a few filters for a smaller batch of data first.
Know More - https://www.nucleustechnologies.com/sharepoint-migration/