This is a tough question because there are so many variables in the field hunting wild birds. A lot depends on the cover and conditions. There are times the bird will be right under the dog's nose. But if you have a strong breeze the dog might lock up on point at first scent and the bird could be 10-15 feet away, or more. I think most pointing dogs will go on point when they get a strong scent. If the bird then starts to move my Brittanys will come off point when I approach and start to slowly track the bird trying to pin it down.
This is all part of the learning process for your pup. Don't expect too much at 7 months. Give him another 4-5 months and you will be amazed at how much he starts to figure out on his own as the natural instincts start to take over. As I said in my post on your other thread, be patient, you're working with a young dog. If your dog has a hunting background and proper breeding he will figure it out and it will all start to fall in place. This being your first dog you will learn right along with him. In fact, he will probably end up teaching you. Just enjoy the experience, it's a blast!