I would think you should probably make sure he totally knows sit before going on to something else. Usually sit is taught pretty easily, what method are you using to teach him? I always just put a treat in my hand and sort of lift it up in their air, so it sort of makes them look up and they automatically sit their bottom down. If that doesn't work, I gently push their little butt down and say "Sit." Jackson got it within ten minutes.
Regarding other tricks though... for example, when I was teaching him "Bang bang" (play dead) it took a few weeks of pushing him over and saying bang bang for a few minutes every night until he finally got it. But in between that trick, I taught him others like stay, come, down, shake, etc. |