The relief plan usually lives in a group text. Someone says they will sit with Mom on Saturday so you can sleep through the night, or a hired companion is booked for two afternoons a week so you can run your own errands. Then the plan starts to wobble, and each wobble arrives as a small, reasonable-sounding message. Learn to spot the pattern early, because the first slip is the cheapest one to fix.
Local option: New Plan Care gives families in the St. Louis area in-home help so a parent can stay home: companionship, help with bathing and dressing, meals, and overnight care. Call (314) 405-0887.
Watch for the swap that becomes a standing change
One moved date is a scheduling accident. Two in a row is a pattern. Look at the last four planned breaks and ask who rebooked, rescheduled, or covered for a cancellation each time. If the answer is mostly you, the relief has already moved to your side of the table. Write the dates down rather than trusting memory, because memory of a fair split tends to favor whoever is doing more.
Check whether the help has a name and a start time
Planned relief that works has a person attached, a time on the calendar, and a backup if that person falls through. 'Someone will come by' is not a plan. Ask who is responsible for the next slot, and whether it has been confirmed with the caregiver agency or the sibling who offered it. If the answer is 'we'll see,' the break is already at risk.
Notice when the gap gets filled without a conversation
The most important sign is quiet. The sibling who used to take Thursday nights stops mentioning it, and you pick it up because nobody else did. Nobody decided that. It just happened, and the group text never recorded a vote. Name it in the next message: 'I covered Thursday because the slot was open, and I would like it on the list for next month, not as a default.'
What to do when the pattern shows up
Put the missed breaks on one page, ask who will take the next two, and set a date to review the list. The Family Caregiver Alliance publishes plain guides on respite options that are worth reading before you ask anyone to commit. If the list keeps coming back to you, it is time to look at outside help, and the Local help page on this site is a reasonable place to start.