Now, or you're doomed.
Seriously, how long is a string?
There are people who get representation pretty quickly. There are people who never get an agent. There are people who needed an agent. It's like asking how gray should gray be?
It depends.
Even if you do get answers here, there would be 30, 40 different answers, and there will not be any consensus. Probably from a few months to years, if at all. So, what would be conclusion be?