Raised and showed Shelties for 20 plus years. It is a very hard breed to win in, lots of handlers now than ever before.
The only thing you can do is start immediately training the ears, your breeder should be happy to help you with this .Glueing them is the easiest to do, the breeder can show you how to do it. I used to start glueing ears at 8 to 10 weeks and all through teething. . They have to stay glued down the tips and glued together on his head to get them up on top of the skull They have to have the correct tip. Watch his size and see how he grows. Are his parents Champions? How long has the breeder being involved in Shelties?
I will be honest. I finally got out of Shelties because it was a very "clicky" group no matter where you are. And you are right, very hostile. I just got tired of the backstabbing and unhappy people ,plus it has very much turned into a hander breed.
Be prepared to spend hours grooming the coat, adding stuff to make the ruff stand up around the head and neck, lots of "ratting" coat on the neck to get the correct look,hocks have to be trimmed just right, hair on back has to lay down flat. You won't ever get anywhere trying to show "natural" will just be a points filler for someone else. I am not trying to discourage you, but just be prepared. Also, to finish a Sheltie these days unless you have a super puppy, you are probably talking 5000 or more from start to finish. Very very hard breed to finish a champion. Huge entries so it takes a lot to make majors. Not sure where you are located,but there are good folks out there , you just have to find them. Hopefully your breeder will mentor you, train you to groom and help you finish your puppy. Would love to know his breeding.