Well, I am glad you mentioned that.
I grow for myself and am always running out. It is incredible to think back to the days of buying weed.
You want to be sure that you do produce slightly more than you think you will need, every time (ie Overgrow). Trust me.
Supply creates demand, as it were.
There is a thread on here about root pruning mother plants.
I prefer to take clones just before I flip my plants, so, no mother plants for me.
99%