If the TV is payload limited....that can be an issue. What is the truck and configuration? The payload listed on the door? Sounds like you already know you have a problem. If you know those numbers we can help. Not biased or trying to pass judgement; just trying to help.
No one here can tell you what the "actual" tongue weight of "your" 2520RL will be. I can tell you that the Keystone website lists a 2018 2520RLWE (western) with a dry weight of 5025 and carrying capacity of 1925 = 7000 lbs. gvw. Dry tongue weight of 616. 7000 lbs. x .12 = 840 lbs - generic. It could be slightly more or slightly less. Give us those specs and there are folks on here that can pretty much slice and dice what you need to know.
Danny & Susan wife of 53 years
2019 Ram 3500 Laramie CC SB 6.4 4x4 4.10
2020 Montana High Country 331RL