No practical advice, OP, but I read this a while ago and it resonated with me.
'Expected Death ~ When someone dies, the first thing to do is nothing. Don't run out and call the nurse. Don't pick up the phone. Take a deep breath and be present to the magnitude of the moment.
There's a grace to being at the bedside of someone you love as they make their transition out of this world. At the moment they take their last breath, there's an incredible sacredness in the space. The veil between the worlds opens.
We're so unprepared and untrained in how to deal with death that sometimes a kind of panic response kicks in. "They're dead!"
We knew they were going to die, so their being dead is not a surprise. It's not a problem to be solved. It's very sad, but it's not cause to panic.
If anything, their death is cause to take a deep breath, to stop, and be really present to what's happening. If you're at home, maybe put on the kettle and make a cup of tea.
Sit at the bedside and just be present to the experience in the room. What's happening for you? What might be happening for them? What other presences are here that might be supporting them on their way? Tune into all the beauty and magic.
Pausing gives your soul a chance to adjust, because no matter how prepared we are, a death is still a shock. If we kick right into "do" mode, and call 999 or call the hospice, we never get a chance to absorb the enormity of the event.
Give yourself five minutes or 10 minutes, or 15 minutes just to be. You'll never get that time back again if you don't take it now.
After that, do the smallest thing you can. Call the one person who needs to be called. Engage whatever systems need to be engaged, but engage them at the very most minimal level. Move really, really, really, slowly, because this is a period where it's easy for body and soul to get separated.
Our bodies can gallop forwards, but sometimes our souls haven't caught up. If you have an opportunity to be quiet and be present, take it. Accept and acclimatize and adjust to what's happening. Then, as the train starts rolling, and all the things that happen after a death kick in, you'll be better prepared.
You won't get a chance to catch your breath later on. You need to do it now.
Being present in the moments after death is an incredible gift to yourself, it's a gift to the people you're with, and it's a gift to the person who's just died. They're just a hair's breadth away. They're just starting their new journey in the world without a body. If you keep a calm space around their body, and in the room, they're launched in a more beautiful way. It's a service to both sides of the veil.'