[rmp]

you can take them all off at once, and restring them, no issues

if you want to replace one at a time, that's ok too.

taking them off gives you a chance to do things like hydrate the fretboard, which can be done once or twice a year and polish the frets, which can be another annual kind of task.

I take them all off at once, and as I replace them I seat them all at the bridge at the same time, Bass side to treble, I can reach my hand in there and make sure the ball end is seated properly up against the pin.

this helps to avoid some wear on the pins, and the odd chance that the ball end starts to push the pin back up out of the hole.

That's me, you do you.

There are lots of vids out on YouTube as well

I kind of do what is called "the Taylor method" But it is what I've always done, I had no idea there was a "method" till I discovered the link in one of these forums.

Maybe check that out.