Xfinity resets / pauses Internet between 3am/6am nearly every night

I know we can't be the only family that experiences this. Until a couple years ago, this never happened. Then last year it started regularly and now it would seem it is nearly every night when the roommates and family are all (usually) asleep.

The router is on and works fine all the time. At night during this time it is green and fine - until around then. It starts to knock devices off, as if it's resetting. You can interrupt the process by doing a hard restart (unplugging) and get partial use back but that is it. It continues cycling without any changes to the light on it. The network is visible on devices but not usable. No amount of resets work.

My hunch is either that xfinity updates our modems every night automatically - or logs in to get info - or more likely that in areas of high density (which mine just became) they conserve power and bandwidth by turning access on and off somehow. I don't really have any idea why but I know it's happening. Xfinity gaslights you when you call saying there are no outages. This is not an outage but I have photos of devices unable to connect. Replacing the modem does no good. It's usually just a minor inconvenience( but it IS frustrating that there is zero accountability and zero transparency.

We are in FL. Here are others experiencing same thing. Similar time frame.

https://forums.xfinity.com/conversations/your-home-network/internet-cuts-out-every-night-morning-multiple-times-between-35-am-like-clockwork-and-its-getting-worse/60f29a5c88715379966f6119