Bannish the word "stubborn" from your vocabulary. The puppy is 12 weeks old, he has to learn everything at this point. And right now he is still missing his dam and littermates. That's ok. He will get over it. Might take a few nights though.
Do not call the puppy to get it to come to you. Show it a big juicy piece of meat when it comes to you, say Good Come and give him some of it. Later on, you will affix a line to him and tell him to come, and maybe show him a treat and say Come. If he doesn't a little tug will help him.
Don't give your puppy a command you cannot enforce immediately. You have a couple of seconds. Calling him or telling him to come when you cannot immediately enforce it is teaching him to ignore you.
Use treats and praise to get the results you want. Right now everything should be lots of fun. He has a short attention span, keep training short. You will get a LOT farther with very short training sessions, than you will if you try to maintain the focus of a puppy beyond. Keep it a game, and quit when he still wants more.
Play, play, play with your puppy. Use his name ONLY for good things, with a happy tone in his voice. Do not couple his name with the words No or Bad. Max, Bad! Not good. Max is a good puppy. Use Eh! or No! alone when he does something you don't want.
Never, ever call the dog to you to chew him out or punish him in any way. If you absolutely must do this to make yourself feel better, go and get the puppy. If you call him, and he comes, and then he gets chewed out, he will know better than to come to you again voluntarily.
Motivate him with treats, toys, and praise.
Puppies do not lose their puppy-license with dogs until they are 4-5 months old. I think training is ok for puppies younger than this so long as it is totally positive. There will be plenty of time to get into corrections down the road. Keep it light, fun, positive while he is a puppy, and you will work a good bond between you and him.
Jenna, RN CGC & Babs, CD RA CGC HIC
Heidi, RA CGC
SG3 Odessa, SchH1, Kkl1, AD
Ninja, RN CGC & Milla, RN CGC
Joy, Star Puppy, RN CGC
Dolly CGC & Bear CGC