My DD is 9 months and 3 weeks (born at 35 weeks). She is not clapping or waving yet. She otherwise seems fine, smiles, makes eye contact, interacts with people, is crawling/dragging herself around, feeds herself finger food, can hold her own bottle, copies if bang toys together etc. She can say mama and babbles away. Clapping and waving are the only things she seems to not be doing. When did your babies start waving and 👏?