Up until till the age of two they have the 2 ages, my son talked at just over 2.years old he walked at 19 months, he was behind on most of his milestones, he's 3½ now and running circles round kids his own age, but he does have hearing problems, and hips and blooming allergies (diagnosed by a Doctor) but he's the happiest little manI’d say upset as been told to go by their actual ages now and all discharged so looking for something else to get attention from