[Everglow.]

How do you know when you're reaching burn out & how do you deal with that?

For context:

I have been working a new job since April. When I joined it was a team of three.
One colleague left unexpectedly without any notice.
My manager then left (she'd announced she was leaving a year ago).
I'm now the only person on the team. I take on a case load, do home visits, and it's intense work. I'm taking on the entire case load.
We have stopped most new enquiries, but some work needs to be coming in to keep us running.
I've been alone for 2 months and my to-do list is growing and growing and there seems to be no end in sight. It's a hard area to recruit for because it's so specialist so any attempt to find a new manager has failed so far.

So yeah How do I prevent myself from going crazy? I am starting to feel the pressure a bit and just need some coping mechanisms really!