Hi i have a 3 month old golden retriver. he is actually like 13 weeks. In the last two days he learned to shake paws and dance. he already knows the basics like sit stay down. but im wondering how fast i can move with such a young dog,, like when can i introduce a new trick to him without overwhelming him. id like to teach him some tricks like crawl, hide, pray, roll over, and play dead but i dont want to move so fast that he gets confused. so when can i start teaching him more and how often can i teach him something new?