DANGIT! I don't want to start not looking on YouTube until the 29th! I was just scrolling around the main YouTube page when I was recommended something for KH3 I didn't WANT to see even in thumbnail.
You can remove recommended videos by selecting "Not interested" on your homepage, this will influence how YouTube suggests channels to you in the future. Here's more about managing your recommendations: https://goo.gl/mfD7rf . Hope this helps.