Breathe in. Voice-call your manager. Tell them "Bad news, listen, I'm burned out." Breathe out. Let them ask their questions. Respond with "I'm unable to do th

Breathe in. Voice-call your manager. Tell them "Bad news, listen, I'm burned out." Breathe out. Let them ask their questions. Respond with "I'm unable to do that right now" to anything that sounds too hard to do right now. Even if that means everything. Let them take care of the rest. Only answer their work calls. Call your parents/siblings.