Hey hun!

There is a hip dysplasia support group in here which will have lots of things there about ages and harnesses and things. IF he has it, you'll probably be sent to an orthopedic surgeon who will then review and decide what treatment he needs. It isn't too late for the harness at all, but it will depend on how severe it is, if he has it at all. There are several different kinds of harness. It's impossible to try not to worry. There have been kids who have been diagnosed as babies, and others who haven't shown a sign until they're walking. Wishing you all the best with it, let us know how you go