I haven’t really been in that sort of situation before and am absolutely terrible at dealing with stress but as far the trouble goes I’d say be honest, if you’re still anxious tomorrow tell a coworker you trust (if that’s an option) and try to take things easy. If you feel things building up maybe take a break and sit in silence or go secretly cry if it helps.
Even if it turns a rough week, I believe in you.
I would assume it applies to users and communities on the instance but I’ve never looked into it.