Migrating site collections from 2010 to 2016 redirect help

I'm doing the migration from 2010 to 2016. There are 33 site collections, and we aren't doing them all at once. Because of this, we will be running a 2010/2016 hybrid environment across two separate farms. Here's the rub. As we migrate each site collection over, we need to redirect those site collection urls on the 2010 to point to the 2016.

For example:

2010 URL: http://server/sites/XX

2016 URL: http://server2016/sites/XX

I can't use the main redirect because it will redirect all 2010 traffic. How can I create a rule to only redirect traffic per site collection?