Stop waiting for a beginning dramatic enough to feel official.

Dramatic beginnings are rare and mostly retrospective. Real ones tend to be small, badly timed, and indistinguishable from an ordinary afternoon, and waiting for a moment that feels official means waiting for something that only looks that way afterward. The ordinary quality of the day is not evidence against it.

Stop trying to time the start. Choose a day this week for no particular reason and begin. Whatever significance it has will be assigned later, and only if you started.