[Muckdogs]

Agree with Joker somewhat ->Personally, I always avoid the double command. Sit means sit, down means down until I say otherwise. Stay is a viable command in and of itself and has its use, but I don't recc. using it in conjunction with sit or down. Just MHO. If you are into sport, which the OP gave no indication of but just in case anyone else is interested, the double command will cause you to lose points. Along that same vein, once the double comand is taught, for some reason it is a real pain in the butt to unteach.

I think this dog is too young to be worried with too much obedience right now. If it must be done, it should be motivational and not compulsive in nature. keep everything happy, fun, and SHORT.