I should be clear
I prefer growing out a batch of clones, and taking cuttings from those, before putting them into flower (to continue the genetic line without stressing one plant (a mother).
Then when the next group is ready to be flowered, I'll take another batch of clones/cuttings from them.
This way no one plant is over-stressed
I don't however see a problem with taking 2 or 3 cuttings off a plant every couple months, so I guess it depends on your growing style. If you have a place to keep a mother, and you don't take many clones, she shouldn't be over-stressed.