The sums, done out loud
The sibling conversation. One of them, planned, not the hints.
Pick a time that isn't a crisis. Not at the hospital, not at Christmas. Ring, or sit down, and say what you're doing, in the amounts from chapter 20, and say what needs doing that you're not doing. Then ask for something specific. Not could you do more. Could you take the Wednesday call, so it's yours and not mine. Could you do the appointment on the fourteenth. Could you manage her money from now on, the direct debits and the bills, all of it. A thing with a day and an edge, that can be answered yes.
Ingersoll-Dayton's warning is that asking can make things worse, and it can, and the version that makes things worse is the one that leads with the sums. If the first sentence is, I do everything and you do nothing, the reply is a defence, and now you're two people arguing about a tally that only one of you has been keeping. If the first sentence is, here's what I'm giving and here's what's not covered, could you take this piece, the tally never comes up. You've replaced the sums with a list.
Then accept the answer, whichever it is. If it's yes, hand the piece over completely, and don't check it, chapter 11. A sibling who's been given the Wednesday call and finds you rang on Wednesday anyway will stop. If it's no, or a vague yes that turns out to be no, then you know something, and what you know changes the amount, not the guilt. Your amount was decided from what you could give freely. His no doesn't raise it. It leaves a gap, and the gap is filled by help in, chapter 22, or it stays a gap, and a gap is not your failure. It's his answer.
One more thing, and it's the hardest. Uneven is allowed. Willyard's carers who couldn't make sense of an unhelpful sibling were the ones with the strongest sense of family duty, and they suffered most in the telling. If you need it to be fair, you'll be doing the sums till she dies and after. If you can hold that you're giving what you chose, and he's giving what he chose, and those are different, then the sums stop, and the fairness you lose is worth less than the tally you put down. That's my view. Some readers will find it too hard, and for them chapter 24 has a paragraph.