Ah, okay... Well, did you TT 2 weeks day by day or did you TT day two weeks instantly? You need to be careful cause other villagers may move out... Didn't I just see you on another thread say that you don't TT cause you're afraid you'll lose Twiggy? You need to be cautious. v.v
Either way, plots can take from one day to weeks to appear... I remember my 9th plot appeared one month after my 8th spot showed up. It's random and all chance... Some people get more villagers faster than others.