Nervous

Nervous about my upcoming start date. I got hired in June but my start date isn’t until September. It’s a small cna position (gs5). With everything going on I’m nervous about doing a 2 yr probationary period. Are they still letting probationary staff go? I already work at a hospital which is hard to get into and i don’t want to leave and have to come back because of terminations happening. Im not worried about me not being able to do the job just don’t wanna deal with mess