Our priests and deacon begin their entrance prayers in the temple, beginning before the Royal Doors, followed by vesting prayers and vesting about half an hour or so before DL begins. Somewhere in there there might be someone having the sacrament of confession. Then they begin the Proskomedia/Liturgy of Preparation/Office of Oblation while someone, these days usually myself, chants the
3rd Hour. Proskomedia, and chanting the 3rd Hour go on simultaneously and take about 15 minutes.

One of the worst images I’ve ever heard East or West… I hope you’re not serious…
We’re in a tiny parish so the time of preparation is less than in a parish with hundreds of communicants and only one or two priests. We have a couple of people who normally take turns baking prosphora, as well as the priest sometimes bakes it. We have the tradition where there are individual loaves about the size of a small baking powder biscuit available before DL. People place one on their
personal prayer intention book, or a prayer intention paper, with their requests for either the reposed or the living, or for both, for the priest to offer. After DL the prayer intentions books/papers are returned with the prosphora with the missing piece having been taken from it. The Lamb comes from a larger, tho not very large “loaf”. We have antidoron and wine on a side table for partaking immediately after one receives Eucharist en route back to where one is standing.