Structure helps creativity. ;-)
Each episode page could have ann initial structure, a template, like:
Setup: (character motivations, initial situation)
Plot: (events, what happens)
Jokes: (funny things that happen or that people say)
Punchline: (the punchline. Ian runs off, Dawn drops the coins, etc.)
Quotes: (things people say)
Script: (actual script)
It's much easier to just fill in the punchline than to stare at a blank page…