The guide that others have posted (the one originally from tumblr) has worked for me without any problems or lost villagers.
Do you know if skipping back 2 months work when you have 10 villagers? Or will someone move out within that time?
To make sure nothing happens you can do the new character reset method.
That's a good idea.
For what it's worth, I've never had any problems going backwards. I usually jump back a month or two to get back to the current date after I'm done TTing villagers out.
Even though there are all these testimonies, I'll probably always be wary and cautious. I don't want to loose any of my babies.
Phoebe the uchi bird is packed up and ready to go~
Can I have her? D: