I don't think there is a time limit. I have about 12 UFO's: some need backing, some need blocks finished, and some have been forgotten. I don't remember what needs to be done on them. I will finish them all sometime--I just don't know when--but I won't allow myself to start another project until some of them are finished. You notice I said some of them, not ALL of them. I also have fabric bought for several projects that I want to make. I am pitiful I know.
Sue