Internet connection drops every day at 1AM

I have an Arris S33 modem which I activated on May 27, and have discovered a connectivity issue which may or may not have existed before.  I'm mentioning this because I've only recently been staying up later than usual which is how I discovered the issue.

My internet connection drops every day at around 1AM and connection returns within 5 minutes.  Never longer than that.  This has been happening the whole month of June.  The schedule is the same every day and has not changed.  It is not just Wi-Fi but also when connected via ethernet on my desktop computer.

I have an Amplifi Alien mesh router which is up-to-date firmware wise but I've already ruled it out as the culprit. During this whole month of troubleshooting, I've been on my desktop  computer directly connected to the modem as well.

When I lose connection at 1:00 AM, the light is still solid blue on the S33 modem but my Xfinity app says it is "Offline".  My Alien app shows device is not connected to the internet and "No Internet Connection" is displayed on it's screen.

Looking for some help in further troubleshooting this issue.  Where should I be looking especially when the connection drops at same time every day?

Thanks.