iMessage filling iCloud
Hi -- my Messages app is taking up 5gb of iCloud storage. I've looked in settings on my mac and my iPhone, but can't see how to free up the space without deleting messages. I'm nostalgic and don't want to delete the messaged from my MacBook. Googling shows some options that my devices don't have about storing messages in the cloud.
I'm on High Sierra on the MacBook, and 11.3.1 on my iPhone. I'd appreciate any recommendations.
Thanks!
MacBook Pro (Retina, 13-inch, Late 2013), macOS High Sierra (10.13.4)