I should add, he is formally diagnosed with PDD-NOS and has a lot of sensory issues and I know that following hand gestures / directions is something that kids on the spectrum struggle with but I don't think that's it either. We are seeing very few of his old PDD-NOS related behaviors but this has been an issue since he was a toddler. DS3.6 who has a lot more autistic traits follows my gestures and directions way better than his older brother. I just don't get it?