I am no expert but when I rang the Burns nutritionist for advice, she said 25gs for every kilo of the puppy bites, so if thats the case your pup is having too much if he is having Burns and a pouch
You do have to use your own initiative to some extent to so you can alter to your Dogs own needs, but in my humble opinion he is having too much already, so I wouldn't be in any hurry to increase it. As an aside Belle never had more than 150gs a Day when she was on Puppy food as she was a little on the portly side and she was fed treats, its great food though