I did this two weeks ago , I had to have Four tiered cakes out in the space of five days. As I had to aget on a plane with one of them. I baked and froze most of my cakes , I ganached on Sunday , I covered on Monday , I finished decorating on TUesday , Wed and thurs ( the day I flew out) Once all the cakes were covered I found it easy to assemble and finish. I have to have a sleep every afternoon and can’t work late into the night as I have an illness that prevents this . So a healthy person could probably do this in a shorter time frame.
But baking ahead and freezing was the best thing , I just took them out the night before I needed them and let them come to room temp . I also leveled everything before I froze them .
