My puppy is 13 weeks old and I will be starting a Puppy Training class in a couple of weeks. The Trainer has suggested I move her to Adult food at 4mos. I have always kept my dogs on puppy food until they are a year old. I wanted to get some thoughts on this....my initial reaction is it is too young. I am sure the reason is because the lower protein in Adult Dog food will help to calm her down......like most Lab pups....she has two speeds....HIGH and OFF.