
Bridget
8 weeks is very young for her to pick things up and retain it. Just keep it fun with a treat, when she is in a stand put the treat infront of her nose and slowly raise it up and over the top of her head, say sit once (don't keep repeating it or she will never sit on the first command), her head should come up and her bum go down. Give her the treat and tell her she is a good girl. It will work and she will remember, just do a few each day.
For the down, when she is in a sit, put the treat in front of her nose and slowly lower in between her legs towards her chest on to the floor. (again say down only once)
Have fun, remember 'practice makes perfect' and it is a learning curve for both of you.
Sandra