Hi Sam
What mix is your cockapoo as I think this will very much depend on your dog's mix and size of parents in the mix. Usually you would measure the height from the floor to the withers (shoulder blades) and the length from breastbone to base of tail, so that is probably the measurements most people would have taken. We have an american toy mix, so smaller than the average cockapoo and he was about 11" tall to his shoulder at that age but is longer in the body and was around 16-17" then but there are so many variations on this.
What mix is your cockapoo as I think this will very much depend on your dog's mix and size of parents in the mix. Usually you would measure the height from the floor to the withers (shoulder blades) and the length from breastbone to base of tail, so that is probably the measurements most people would have taken. We have an american toy mix, so smaller than the average cockapoo and he was about 11" tall to his shoulder at that age but is longer in the body and was around 16-17" then but there are so many variations on this.