You could use the WorkBox:
The Workbox is a tool for reviewing and managing items that are in a
workflow. When you need to review your items, use the Workbox to see
all the items that are currently in workflows and the workflow states
that they are in.
All info can be found here: https://doc.sitecore.net/sitecore_experience_platform/content_authoring/managing_items/workflows/review_an_item_in_the_workbox
It does allow bulk operations which might help you as you seem to have lots of items.
Before you publish a content item on your website, commands in the
Workbox let you preview, open, or compare different versions of an
item, as well as approve or reject the content.
Some commands can be executed on many items at the same time, and only
certain commands are shown for all items, while others appear
depending on the workflow commands configured for the corresponding
In the Workbox, in the Workflows section, you can configure the
Workbox to only show specific workflows.
You can open the Workbox from the Launchpad.