When to move from the Puppy to the Adult feeding amount
When your dog has reached their full frame we recommend moving to the adult feeding amount.
We recommend the following:
Toy breeds (Chihuahuas) around 6 months
Small breeds (Jack Russels) around 7-9 months
Medium breeds (Labradors, Cockerpoos) around 12 months
Giant breeds (Dogue de Bordeaux) 18 months to 2 years.
Reaching this milestone doesn't mean your dog won't gain any more weight. What it means is they probably won't grow any taller. They will still mature and fill out but the rapid period of growth that happens as a puppy will slow and stop.
Read more about maturity here