Coming up with a new story

I started to think about a different story for my sheep movie and currently I’m headed in a direction which is very straight forward when it comes to the whole 3-act structure. There’s the inciting incident following by the plot point #1 which ends the 1st act. What follows are some obstactles and the midpoint and then the plot point #2 which ends the 2nd act, then we have the climax in the 3rd act.

The problem I’m having is the plot point #2 because it shouldn’t come out of nowhere. But then why use a 3-act structure for a 2-5 minutes movie? Well I got inspired by Knick Knack, the Pixar short but it could be shorter and simpler and be more of a gag short with no real act structure. Well I will keep thinking about it.