I've been through it before, and have had a really hard time dealing with finding when the appropriate time to take cuttings would be without hurting the mother or stunting the clones.
Problem with 2 weeks is that you run the risk of stunting your clones. They will root and start growing, but they will carry a 3 leaf pattern and by the time they hit the desired 5 that you want before putting them into flowering they can become too tall for an in-door setup. 3 pointed leaves can often produce low yielding plants. Wait until all future colas are at least 5+ pointed leaves. I take my cuttings from my mother plants at 3 weeks which is right about the time the mother will develop 3 nodes under each cutting. Every 3 weeks gives the plant plenty of time to rejuvenate itself. Good luck and don't ever rush things. Take your time, do it right and the results will come back 10 fold, I promise.
