Mark an ordinary Wednesday on purpose: new route home, call an old friend, eat outside. Give your memory something to grab.

Memory keeps what stands out, which means an unbroken run of identical days compresses into almost nothing. Whole months disappear that way, not because they were bad but because nothing told your memory to store any of them separately. A small deliberate change gives it something to attach to. The change does not have to be significant to work.

Do one unnecessary thing this Wednesday: walk home a different way, eat outside, call someone you have not spoken to in a year. Keep it small enough that you will actually do it. Then notice, a month later, that you can still say which Wednesday it was.