Hi my son is 12 months and doesn't clap, wave or point yet despite me doing it everyday for the last few months. He points to my nose when he wants to touch it but that's it. He also doesn't show me any toys and I have no idea if he knows any words. Everyday I point to our dog and say dog as well as other objects but I can't tell if he knows the words as he doesn't point or grab/touch the object when I say it. Is any of this a concern?