Let’s see, the ones I can remember: Joy Ride, Steven’s Birthday, Steven Floats, Tiger Philanthropist, Lion 4, Gemcation, What’s Your Problem, and the aforementioned wedding episode.
All of those present the same “Steven works to hard and needs a break” theme and all of them do so with pretty much the same “Steven over taxes himself by trying to solve the problem if the episode until he learns to take it easy and stop worrying so much in the end.” Which was probably the worst plot to make one of their staples because it’s what gives SU it’s abrupt stop and start pacing and gets especially frustrating when it comes right after plots that have urgency behind them like the Cluster, Lars & the Off Colors being in danger, or overhearing the Diamonds loudly plotting to kidnap more humans and deciding to warn exactly nobody.
Forgive my pedantry, this is more for my benefit than yours since I'll just forget if I don't write this out. I understand the point was about breaks, but it's important to understand the context for each one.
>Joy Ride
Primarily about how his gem and human sides are clashing and how he feels distanced from people because of it. Also something about him thinking he's his mum which I think might(?) be the first instance of that.
>Steven's Birthday
First instance of Steven understanding that he's not going to grow like a regular human so he overcompensates by becoming taller/different. Major foreshadowing to Rose/PD twist with the line "If I can just keep this up forever, no one will suspect a thing"
>Steven Floats
This one is arguably the closest to what you initially described, but ironically is one of my favourites because of Paul's comedic flair. No autistic insight on this one, it's just a calm down episode.
>Tiger Philanthropist
This is more of an epilogue to Amethyst's self esteem arc than it is about Steven wanting a break, per se.
>Lion 4
Steven finally understands that's Rose really didn't want him to be a goody two shoes perfect saviour of humanity and instead just wanted him to be himself.
>Gemcation
Another one close to Steven Floats in terms of importance that could've probably have been shorted or cut down. Mostly about how Steven refuses to open up about the more serious issues in his life and instead misses his one actual equal since they're not on good terms currently.
>What's Your Problem
Steven's thoughts on Rose and Pink are pushed down to focus on someone else's issues instead. A running trend that leads into Future. Ends with Amethyst supporting him instead of the other way around for once.
>Reunited
Yeah he sings a song about not thinking about Diamonds and shit for one day, but that's more dramatic irony than it is repetition or rather yet another example of how Steven places the thoughts of others (in this case Ruby and Sapphire's big day) above his own mental wellbeing.
The show is obviously written for children, so if you happen to forget or just miss out on small characters details from past episodes (something I wouldn't blame you for given those fucking hiatues) it can be easy to think that it's actually the same thing each time. Sometimes they may repeat stuff for the sake of a callback, or to connect the dots, but I've never really felt they repeated the exact same trope over and over. It was very close sometimes, but there was usually a different wrinkle in the end. Obviously you disagree, these are just my two cents.
Edit:
More pedantry here, but Steven didn't hear the Diamonds say they were going to kidnap more humans. Yellow confirms that Blue is sad about not getting more humans from Earth and Yellow responds with "Then there's more time" because the Cluster hasn't hatched yet. He doesn't start piecing it together until Aquamarine and Topaz are actively taking people from his social circle because of a list he gave to Peridot wayyyy back in the first(?) season.
Full exchange between Yellow, Blue and Holly Blue is attached.
