Do what mobeewan said. I did the same thing once. Had to manually lift one end of the roof to do some repair. Had two neighbors help me out and when all three of us got in, we tipped the trailer. No damage done and it ended up being pretty funny. If you are working on the back end, make sure you put down the stabilizers. If working on the front end, the tongue jack will be enough.
2017 Toyota Tundra, Double Cab, 5.7L V8
2006 Airstream 25 FB SE
Equalizer Hitch