Hello there, if you still haven’t heard back, it’s usually for 1 of 2 reasons – you don’t have enough public watch hours, or your channel requires additional, in-depth reviews since the content is close to not meeting our policies. More info here: https://yt.be/help/YPP-review
Sorry to hear you've been waiting so long. Unfortunately, our team doesn't have specific timelines for individual channels (thanks for understanding). Hopefully you don't have to wait too much longer for your update.