Take your time, don’t put in more than you have to. It’s not your job to maintain a company or make up for resources that were let go. Set boundaries. Take your lunch or least two breaks. Don’t take work home. Keep your peace and respect you work like balance.
It’s just a job. Don’t stress.
They cannot fire you if you are doing your job. Identify what that is and stick to it (no more or less)
Have a great holiday, enjoy the layoff.com aka Fiserv twitter.
And if you do get laid off and have tenure enjoy your severance. If no severance, sue them but make sure you document and express your “health” status if impacted by your work environment (you are welcome)