I don't know that you can point to a particular time and say that is when we stop piecing and are considered in full reconciliation. I think it slowly emerges from one into the other. I would expect piecing for at least a year of hard effort, and in some cases two, depending on the stitch. I use to not tell people that b/c I didn't want to discourage them, but most get so impatient and think they should be seeing larger results of their work efforts too quickly. Time, time, and more time is what is needed.
It is not about what you feel should work in your M. It is about doing the work that gets the right results. Do what works!