As was stated, just work in sections and you’ll be fine.
Based on my experience though, waaay to much experience, give a lot of thought to the relocation if the trailer has enough issues you need to brace the roof, jostling it down the road might be the best idea.
I’ve been involved in moving numerous ‘bunkie’ trailers off of cottage properties.
A surprising number of them didn’t fare well if they had water damage. On uneven roads the superstructure does a fair amount of twisting and moving.