@dtrpogod I used to have to do this! I'm a groomer now, but before I was I couldn't afford to get him groomed very often so I would shave him to a 7 and take him in when he got long again. As long as you're still brushing him in between grooms getting him that short won't hurt him
@meme3 I like PetSmart for learning, it gives you experience as well to put on your applications. I think it really depends on if your salon leader is good at training you, cause mine is great but I've heard stories about other salons