Mobile data usage spike using Android app when connected to Wi-Fi

Nothing has changed on my end as far as I know, but I was monitoring the camera in my house on wifi the other day waiting for a delivery driver to show up and received a notification from my service provider that there was a spike in my mobile data usage. I've been checking periodically since and it appears as if it's using it any time I view the live feed.This month the app has used 403MB of foreground data so far compared to 8MB, 68MB, and 2MB over the last three months. I typically will watch the camera for deliveries and have never run into this in the past.I'm using a Google Pixel 5, if that means anything.Thanks!