If you've been waiting that long, your channel had a first review but we didn't come to a clear decision, so more effort & resources are going into more reviews. Creator Studio doesn't show this, so it's confusing & looks like you haven't been reviewed. Hope you hear back soon!
While we don't have a specific timelines for individual channels. We review all YPP applications manually and it does take a bit of time. In the meantime, we'd recommend keep uploading original content as the more info/content to review, the better.