I cloned a flowering mom once and had to reveg. I had the best success on the plants that had the least amount of flower on them. Trimming the flowers off and leaving a few leaves seemed to speed things up for me, in addition to 24/0 light and a flush and feed with veg nutes.
Took about two weeks before they were full on vegging again, including the time to root. These were smaller, younger, more pliable cuttings.