RE: Upadate with moe questions Also thanks
Your pup is just being a pup. He probably has lost some confidence losing his littermate, but that's OKAY. He is a POINTER. He needs to learn to be independent.
As for being afraid of cars and such, why is that a bad thing? Less chance your pup will get hit by a car when he gets out, and trust me, he is going to get out one day. If you must walk him though, when he cringes, whines, stops. just IGNORE HIM and keep walking. If you stop to comfort him, it will not help build boldness.
You really need to be "Happy Timing" this pup right now, not teaching him to heel. I suggest Delmar Smith's Best Way to Train your Gunndog. Run don't walk to your bookstore to get this.
Basically, you need a place where pup can go romp and figure out that cactus pokes, birds hide in bushes, water won't hurt him, and ditches can be crossed. He needs to do this several times a week. It will bolden him up, teach him to range, and if you just shut up and walk while he explores, he will learn to keep track of you which is pretty important in a shooting dog. You need to find a place, ASAP and get this little guy out there exploring. You can bring his littermate along sometimes too. This is what your pup needs to learn this first year. If you have an area that holds some birds even better. If he chases, let him. It's the best thing for him. He will soon learn he cannot catch them.