Laid off three weeks ago and job searching while still finishing out a notice period feels like living two lives

Got laid off three weeks ago but I'm on a 60 day notice period, so I'm still logging into the same Slack every morning while quietly interviewing elsewhere. Coworkers don't know yet. It's a strange kind of tired, being helpful and present in meetings for a job that's already ending while trying to sound enthusiastic on calls for jobs that haven't started. Not sure there's advice here, just wanted to say it out loud somewhere anonymous.