Much shorter battery life for all my ring devices

What has changed since June? I have two ring devices, a front yard Ring 2 doorbell camera and a backyard stick-up camera. Both run on genuine Ring batteries. I used to get a solid 3 months per charge. Now, for both devices, I'm getting at most 2 weeks on a charge. I just bought 2 replacement batteries, thinking both of my old ones suddenly stopped being able to hold a charge, but still the same issue. I didn't change any of the motion settings for either device, still using all recommended settings. I am not experiencing weak network connectivity. Was this the result of a defective firmware upgrade?