Can anyone help me understand why this iron farm spawned a few golems and then nothing since? The dimensions and distance of every villager chamber are exactly the same and equally apart from one another as well as the spawn chamber for the golems. There's nowhere for other golems to spawn, the villagers are able to sleep as seen in my image and they rested for days before I got the zombies in there. The boat placements are all in the exact same spot in the exact location the guide I used said to place them, I just don't get why nothing spawns when a few did at first

I used this tutorial and not a single person in the comments talks about this, it's all about golems spawning outside the area which they can't here as there's no room anywhere

https://www.youtube.com/watch?v=5Vec-U3cCjI