Frequent internet disconnects/modem reboots due to bad signal

Woke up this morning and, to no surprise, my connection had dropped overnight again. Went upstairs and took a 3 dB attenuator off after trying to get it to connect again with 9 dB total attenuation, powered the modem off, waited 30 seconds, screwed coax back on and powered modem on again and we're connected for another few hours again. Screenshots below are from ~5 minutes after reconnecting.