The vertical is the episode. The horizontal is the running joke. Fill the grid. That’s writing.
When I get stuck or if there’s an awkward transition I’ll just put in bold, all-caps: WRITING. Come back to it later. Say, “this is the placeholder. The placeholder for writing.” “What’s going to happen? I dunno, something I will write. In the future.”
Like those signs by housing developments, “FUTURE SITE OF WONDERLAND ESTATES” and today it’s just bulldozers and dirtpiles by the road, far from the city.