Discus usually are best bred between 1.5 - 3 years of age. you must be doing something right to have year old discus doing so well
normally its best to let the parents raise the kids, discus milk and all... im sure you've read up etc..
basically clean tank, not too large, not too small. breeding cone, or filter inlet (my weapon of choice_ never fails) :lol: and a cold water change, dropping the temp by 2 degrees is usually enough to get them going once every 2 weeks or so.