If you have disk space and an up-to-date docker, you will probably be fine.
If you have an out of date OS, and that makes you have an old docker, you should spin up a new VM and move to it as described at Move a Discourse site to another VPS with rsync.
I’m pretty sure that at least most of the people who have had trouble have out of date Docker versions, most of which are caused by out of date OS versions.
If you spin up a new VM then nothing can go wrong since your old server will still be available.