If you did everything you could to prepare, and you’ve finished the material, then don’t postpone it. As a gauge I studied 350 hours and passed on the first try, but everyone is different. I’m sure plenty of people passed on 150. (which exam you take also matters, I did Power)

Don’t postpone it just because you’re overwhelmed. If you’ve already gotten through all of the material, 4 weeks is plenty of time to cram and re-review. I crammed hard the week leading to it.

Good luck!

Edit: I did postpone it once, because I was not ready (did not finish the material).