CONGRATULATIONS TUCKER!
He sounds like one smart little baby. For me, once I teach sit, the lay down command is very easy to teach. I don't know why, it just has been that way for every dog I've owned. Well good luck with Tucker! He's smart so have fun and good luck because he might be a little TOO smart. Ya know like if he learns how to open locked doors and his cage. LOL! Well again cograts! Let us all know when he starts speaking English!