2022 Tundra spotted towing

Once you add the battery (50 pounds) and if you have full propane tanks you have to 30lb tank holds about 31.25lbs of propane each, a 20lb tank holds 19.3lbs. So that's anywhere (if only 1 propane tank) from 69.3lbs to 81lbs more on your tongue weight. Then you have to count in the receiver hitch also, which subtracts (normally) 100lbs from your payload. The RPod may not count the tank weight itself into the tongue weight, so you can add another 25-35 pounds for per tank itself. THEN you have to take into consideration your trailer contents. The more you add to the trailer, the higher the tongue weight climbs.
We had a Winnebago 1790 (same layout and size as the RPod 179). Our tongue weight when loaded was 528lbs, and that was with careful loading and putting some weight behind the axel to off-set the tongue weight. It was the main reason we went from the 4Runner (500lb TW limit) to the Tundra. Then a tree ate the 1790 and we upgraded to a 2401RG, which is the MAX I'd pull with the Tundra and takes even more careful loading than the 1790 did.