Your reading style needs to go from “reading with some skipping” to “skipping with some reading”. Skipping is the new main course. Skipping is the primary activity.
From the Postsecret blog site
Before Sunrise” imagined romantic love as yours for the taking. “Before Sunset” saw it as something that might slip from one’s grasp. “Before Midnight” looks it straight in the eye and calls it out as hard fucking work. “It’s not perfect,” as Jesse says. “But it’s real.
“It is the greatest of all mistakes to do nothing because you can only do little. Do what you can.” ~ Sydney Smith
Occasionally, just writing without a plan is a worthwhile exercise, especially early in the conception so you can hear the voices of your characters. But I’d leave writing any actual script of an episode until you know how it ends. You’ll think of a better ending as you write the script. But if you don’t have any ending when you start writing, you almost certainly won’t think of one.