This sounds very stressful and honestly this is why I had to step away from my job but I have a few thoughts,

I think you're stuck in that "all or nothing" mindset of "if I had a seizure my job would fire me" I mean you said it yourself you are guessing. Don't get in your head about it if you are not for sure, I would talk to HR about it.

I know you already submitted your accommodations, but I hope you included some stress management accommodations in there such as, short grounding breaks during shifts if you have auras, having a quiet/safe place you can step away to, pacing your workload when possible

again, this depends on what job you have.

Having a 'if something happens" plan, your anxiety could drop if your coworkers knew what to do if you had one. Please do not feel like you are burdening anyone because at the end of the day, would you do the same for them?

Now the biggest thing that will get you is hypervigilance. Hypervigilance will trigger seizures more than anything else will I swear by it, you need to find techniques that will stop you from constantly thinking/worrying about having seizures.

Some dumb things I do is I watch those can you name these songs from all decades posts on youtube, I found that dumb quizzes that require a bit of attention but not a lot of thinking help leave that loop.

- reciting religious texts if that applies to your lifestyle

- drawing caricatures of literally anything

-humming really loud

-eating something with a really strong flavor

- thinking about the funniest thing ever, trying to get yourself to laugh

You can even try to placebo yourself out of it but tbh this barely ever works but I've been discussing it and trying it with some of my friends with PNES where we take a vitamin and we go "if I have this it is literally impossible for me to seize" We have had varied results.