Most movies go through many drafts before a final cut is reached.
It's very common to go into 6, 7, 8 revisions - even reshooting large chunks of the movie up to the release date.
But before you can judge your movie, you'll need a first draft.
And it's very likely not going to be good.
The pacing will feel off, tangents appear & disappear, obvious information is missing, etc.
This is normal.
In fact, this is the point.
Because this is the point when you actually begin to make the movie.
Everything else was just the accumulation of material.
This 2nd+ revision is where the movie as an object begins to take shape.
So set a deadline for the first draft, and stick to it.
Keep the editing to a relatively short period of time, to stimulate momentum.
The point of the first draft is not to create something amazing!
I've seen a lot of people quit at this stage because of frustration.
The point of the first draft is to have a solid timeline.
The point of the first draft is to have something that looks a lot like the movie you shot play uninterrupted on the timeline, from beginning to end, for your aesthetic judgement.
Once you watch the first draft mish-mash, your aesthetic judgement will know EXACTLY what direction the movie needs to go in.
What to shorten, extend, include, extract, or refine.
So then you do it.
And then your movie gets better.
And better, and better - with each revision.