Hey Emma, i just want to let you know that you're not the only one to worry about this. It is a legitimate thing and your body and mind is trying to prepare you for the challenge ahead, but you can do it! For all the benefits you mentioned, and also for the sake of proving to yourself that you can do it!

Those of is that have ADHD need more stimulation in our days, so having the same full-time schedule every weekday is a challenge. Maybe you can key into the differences between Monday and Tuesday, etc., and be looking for ways to be true to yourself in this new schedule.

Also, whenever you work a new job or a new place, but especially a full time one, in the beginning you'll get waaay more tired than you'll be when you're used to it. That is also normal, and not a problem with you, and it ends after it stops being new. Your mind has to process all the social, informational, etc., stuff at the new job, so maybe plan ahead by trying to limit some of your optional after or before work commitments for a little bit, just to have that room to breathe. You got this :)