Hi OP
I’m really sorry you are in this situation and thought your post was very clear and well described the position regarding the other adults (or near adults) in the house.
That is why I suggest you put it in an email or text which will go out to everyone while you are on the plane/train or in the car on the way to your detox.
Find a yoga/mindfulness/exercise/art/cooking/
whatever weekend or holiday and go.
When you return, I agree with Dittzy. You’ve had the days catching up on sleep, what you need now are grounding things, particularly being outside (if the weather co-operates!). Walk, run, cycle; get in the garden or volunteer with a river-cleaning group or something similar; join an exercise/dance class - all things to get your body moving and get you out of your head.
You are going to need a bit of strength of character to stick to not going back to the old status quo. Apportion yourself a small part of the rota that by now should be up and running but don’t do any more- unless whoever is asking is prepared to “trade” but be clear that it’s a one-time deal.
When you are stronger and thinking about your return to work, sit everyone down and discuss each individual’s obligations going forward so that you don’t pick up that burden again.
You sound like you know in your head what need’s to be done to alter everyone else’s laziness mindset, you need to summon your will now and do it.
Oh, and during this time, no “discussions”
with DP - you haven’t got the headspace. Otherwise, he’ll be convincing you to take back some of “your “ stuff - don’t fall for it.
Hope you can resolve things. Best wishes.