Usually you can find it on their schedule e.g.:
https://www.twitch.tv/gothamchess/schedule
I believe Levy might cover the WCC starting Nov/25 so there's also that. 
How do I watch gothamchess, and why is he never on the chessTV schedule?
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Thank you! Clearly I am just an idiot! That is also why I am only rated 1000! Nah but seriously, thank you a lot
I don't know whether he streams on kick or twitch, and I also don't know at what time he usually stream. I also don't know what days he streams. I also don't know why he is never on the chessTV schedule. I also don't kn- ok I'll stop you get the point now somebody help me.