Pretty sure I'm being fired in a hour

I'm 3jobs in right now. Two full time, one on call. One is fully on site, one is hybrid. I'm pretty sure my hybrid is going to fire in at our meeting they have set in a 1. I had one meeting with them a couple days ago( my supervisor, the director and the head of HR) they brought up concerns of me missing deadlines. I've had alot of technology issues, which I've kept informing them of. That meeting ended with no clear decision. Hr then set a meeting for today, at the end of the day. I'm trying to have radical acceptance. My ONLY fear is this job is what gives me my insurance. I'm so anxious right now.