The Great Gatsby, I just got wised up

I'd like to know if "just" in this excerpt from the chapter Seven of The Great Gatsby has a temporal meaning (recently) or an other meaning:

(Wilson speaking)

“I’ve been here too long. I want to get away. My wife and I want to go West.”

“Your wife does,” exclaimed Tom, startled.

“She’s been talking about it for ten years.” He rested for a moment against the pump, shading his eyes. “And now she’s going whether she wants to or not. I’m going to get her away.” (...)

“I just got wised up to something funny the last two days,” remarked Wilson. “That’s why I want to get away. That’s why I been bothering you about the car.”