Thanks for being patient with us. Due to large number of applicants and manual review process, this does take time. We recommend you to keep uploading more public & original videos as the more content for us to review, the better! More info: https://yt.be/help/AsbB
Sorry to hear you've been waiting so long. This means that your channel is being held for a second review because our team couldn't come to a decision from the first review. Extra efforts and resources are being put into reviewing your channel. Hope you hear back soon.