R6700v2 - 1-2 second intermittent disconnects

Hello! So I think my router (and possibly modem) might be on their last legs, but I wanted to see if y'all have any alternative solutions other than just buying a new modem and router. They are about 3.5 years old and have not really had issues until about 6 months ago. The internet would randomly drop for about 10-15 seconds and some of my connected devices, like a nest thermostat for example, would not reconnect until I rebooted the modem and router completely. That went away for a bit, but now as of the last week or two I have had these random 1-2 second disconnects that occur. Its not a HUGE deal, but just kind of annoying when I am working on AWS or playing some games with friends. I contacted my IP and they said everything looked fine on their end, but they did some sort of reset on their end regardless and said it should clear some things up. The issue occured again today. Logs showing the disconnect below:

[Internet connected] IP address: 73.32.151.204 Friday, August 13,2021 11:22:26
[Access Control] Device ROKU TV with MAC address 5C:AD:76:0C:55:2D is allowed to acces Friday, August 13,2021 11:22:25
[Access Control] Device UNKNOWN with MAC address 58:70:C6:17:68:65 is allowed to acces Friday, August 13,2021 11:22:25
[Internet disconnected] Friday, August 13,2021 11:22:25

Any help is appreciated!