izigame.me

I'll be honest, for a large part in the middle of this DLC, I absolutely hated it, I dreaded and experienced lowkey anxiety when attempting certain parts of the DLC content, and because of that I seriously considered just not finishing it. But, I'm glad that I stuck with it and did see it through, because in the end it was so amazingly worth it.
Like with the base game, I wish I could wipe my memories and do it all over again. (Though, maybe with a warning to myself beforehand to 1. play it concurrently with the main game, and 2. not to use the 'reduced frights' setting.)
As someone who played this DLC after fully finishing the base game (mostly because EotE didn't exist until a long time after I finished my original Outer Wilds playthrough) I actually recommend playing it together with the main game. One reason for this is that while at first it may seem the DLC content is somewhat disconnected from the 'main mysteries' of the Outer Wilds universe, it's actually very well integrated and gives depth and answers to certain important parts of the narrative.
The other reason is that being able to go back and forth between discoveries in the main game and the DLC would have prevented some frustrations that came up for me. Which stemmed in large part from having nothing to do anymore except going back to the DLC content over and over again without something to break it up and give me new ideas and perspectives to try and get past hurdles (other than entirely different games).
(Though, those frustrations did eventually lead to me discovering something in a way I probably wasn't 'meant' to discover it, and that something was THE breakthrough I needed to solve what I was stuck on and finish the DLC.)
Much of the 'scary' aspects of the EotE DLC are more of the existential dread and fear of the unknown kind you may have already found yourself experiencing in the base game, though the DLC definitely leans more heavily into it as a main feature, rather than something that happens incidentally due to the nature of the adventure. Overcoming it is just as, if not even more, wondrous and satisfying than it already was in the main game, so definitely don't let any warning about the DLC being scary hold you back from attempting it.
I do feel the need to mention, though: The 'reduced frights' option did absolutely nothing for me except make the 'scary' parts actually terrifying. It was the difference between one short spike of surprise/fear followed immediately with relief and the (familiar) slight frustration of being back at square one (with the default setting), as opposed to a prolonged haze of panic and then anxiety over having to subject myself to that again and again each attempt (with 'reduced frights' on). So, definitely experiment with that instead of just toggling it on.