Went on january and still waiting??? That sounds bad...A friend of mine went on february and know he's on the bridge course. I went on march, and come back today morning for the psychological test...if I'm, OK, next week I'm going to live to Panama, starting my bridge course on 29th.
Since you receive the mail requering your documentation, you'd have to expect around 3 months (if everything goes well) to complete all the process and start working at COPA.
Regards.