Congrats! Just let nature take its course. After several hundred splits, I can honestly say, it gets really old, especially when you want to keep a mixed reef tank.
If you want to keep a mixed reef tank, then take any opportunity when a clone is on a tank wall to gently pry it off (use your fingernail to get under the edge of the 'nem), and put the 'nem in a separate container or tank (and sell it to another reefer or trade it in at your local LFS). If you don't do this, you WILL end up with a BTA specie tank.
Kevin