well idk for me i just go two days forward then one day back, usually someone goes ahead and says they want to move.
For my cycling town, I use THIS, works like a charm (seriously it's crazy).
For my main town, (I no longer cycle it), I use THIS method (slight modification is used; after I tell a dreamie to stay in my town, I TT ahead three days using AC clock then continue). 100% works without fail, you'll never lose a dreamie ^-^