I love Bluey, but it has started to become annoying since my cousin became obsessed. Any advice?

My cousin develops different obsessions over time. Last time, it was Spongebob. Which was annoying, but at least wasn't something I liked. He watches episodes on repeat multiple times a day. He'll rewind one scene for 30 minutes just because he thought it was funny. The worst of it is he'll quote certain stuff from the show for days on end. He repeats himself a lot, so it gets tiring. I want to still love this show, but it's hard.

Edit: I am 16 and he is 11, if that is important