Need help ASAP!!!!

We signed on today for the first time in about a week. Well our FAVORITE neighbor (Fang) has his boxes packed and is moving out.




Is it possible that if we set our clock back a week to say 10/30 that he will not be moving? And if we put our hybrids (the ones that are still alive

) in our house.....will we lose those?
We don't buy turnips anymore so we are okay that we can't buy them....we just were trying not to lose Fang. What would happen if we moved it back and he stayed and could we move it back to the current date?
Do we change the Wii clock or the game clock? When the game started up and Rover asked the time...it was still an hour behind because we did not change it for when we moved the clocks back last week.
Thanks SO much for any help you can give. We figure we have to do it tonight since his boxes are already packed. Its not even like he was coming up to say he was thinking of moving.
Thanks so much!!!