Changing strings on a Resonator

I have this Mya Moe Resonator I plan to try out different strings. It is currently strung with original Mya Moe high G. I want to try Low G. Any suggestions? I have experimented on numerous strings for "regular" Ukes but never on a Resonator. Same rules still applied?

I think Resonator has floating saddle, so do I need to change strings one at a time so the puck won't move?

Thanks for any help.

If it's a floating bridge, definitely one at a time.

Thank you Campbell and Geoff.