It could be just puppy wiggle.
Good on you for being aware of HD and ED - grow them slowly, don't over exercise, allow, minimise high impact exercising such as jumping, don't allow fast sprints with sudden stops etc.
Not to alarm you but a dog walking with a wiggle generally has HD, my 5yo GSD girl has HD, she is fairly even on both sides with it and has a score of 38. She walks like Marilyn Monroe, hips wiggle from side to side. To manage her she gets a glucosamine and chondroitin capsule every day. It is important to note, there are degrees of HD and ED, those with mild to moderate can live a happy life with supplements andgenerally won't require surgery.