PIP (fabricated) follow-up

Hi Fairygodbosses! Well, I have come to the end of my PIP and have my follow up meeting on Thursday! Unfortunately, I have not found a job yet but I remain positive. I took the advice of others to not quit, but I do believe they will term me on Thursday. I have NEVER been terminated before nor have I ever been on a PIP. For the record, I did write a rebuttal because the PIP was laced with lies. I’ve been with the company for several years but new leadership came on board recently. He is a lying bigot but I have no more fight in me. I don’t know if I will receive severance but at least I have accrued vacation to take with me. I still have time to quit to save face but still not sure what to do. I am in the twilight of my career with about 4 years left to retirement. Never thought it would end this way but such is life. If anyone has been in this situation and had a PIP follow up meeting, please let me know how one would prepare for such a meeting. The strange thing is that they set it for noon. I thought most would be set for the end of the day so one can leave with some dignity. I also found out that my assistant is scheduled to meet with the HR team right after my meeting. I am a recruiting manager and have a recruiting assistant. HR has been trying to have her work on their team for almost a year. Let me know your thoughts or if you have any advice. I am at a loss. Thank you.