My mother in law has almost no short term memory now. She has a mobile phone which she can still occasionally use. She keeps it in her pocket and tends to switch it off if she’s not using it. We have tried telling her not to switch it off and left prompt notes to try and remind her but unfortunately these days she doesn’t really notice the notes or associate them with anything. it’s not just the phone, it’s pretty much anything now. Should we just accept that prompts don’t work any?