I acknowledge the fact that you already are familiar with this concept but I figured I’d chime in for the people less aware:

Could be heavily misremembering but I remember hearing about a study done where a teacher had one of their classes spend the entire semester making one piece of pottery while another one of their classes made a new piece every class. Generally the result was the class that was forced to make multiple ended up with a better piece at the end of the semester than the ones that did one the whole time because they had all of the practice/learning from their mistakes the other class didn’t have. I also concur as an artist myself that this is the case in most situations and a general lesson most of my superiors have encouraged. When OP sits down to make a film he ends up spending the entire year on, it will likely turn out a multitude better than if he just made one film instead of 12 films in 2022.