In the original post, the pup is very coo hocked. However, he looks all over the place in his growth . And pictures can make things look worse . A little video of him walking and playing might give lads with a bit of experience of this a better advantage to pass comment,. Personally I'd stick to short regular walks and a bit of free running, as for the feeding . If hes on too much protein, it might not be doing him favours as hes growing too fast . So I will go against the grain with advice and if it was me I'd stick with a very good complete puppy diet for next 5 months with a good chicke