@froussy yeah as long as you connect in on something other than what is being changed you should be fine - if something goes wrong and your change isn't working you can always switch it back, etc.
Over the years I have myself shot myself in the foot a few times, its never fun.. ;)
Always give yourself a backup/backout plan.. When doing change on a cisco router or switch that could be problematic etc, always put in a reload command on a timer.. So worse case if goes wrong - it will reboot say in 10 minutes and your back to the start, if your change worked as you expected and all things working you can cancel the reload and save the config, etc.
I mean the switch/router rebooting might be a shitty outcome and maybe cause a service interruption, but that is far better than being in a broken config for a length of time until you can get to the site to fix, etc.
I mean your switch of interfaces should be no big deal, and work just fine, etc. "But" what if it doesn't and now you can't get in to fix it.. Better safe than sorry..
edit: I once getting cocky after so many eventless upgrades - had just clicked upgrade on a one of the old 2440 netgate boxes while home after work because figured hey nobody is there so they won't notice the few minutes of down time while it upgraded... Well it never came back and had to go into the office early to fix it. Only took a few minutes to restore and get the upgrade done when I was there.. And that was always my back up plan in case of disaster.. But this is why during covid and locked out of the office I didn't upgrade anything remotely ;) heheh
Better safe than sorry is good motto to live by ;)