@Amsneb If the internet light is turning amber, the router is indicating that it still sees a connection (from router to modem), but there is no internet connection.

What would be recommended is to swap out the Ethernet cable to see if that may be causing the connection drops. Contacting the ISP and seeing if they are seeing service drops on their end would help to make sure the modem and internet signal is fine.

You could also wire a computer directly to the modem rather then the TP-Link router for several hours to see if the issue is from the modem or the routers WAN port that is dropping the connection.