9 week old development

vonhva03

My Lo turned 9 weeks last Friday. She was born at 38 weeks and 6 days.

She is definitely starting to smile and coo more which I know is  on track. But she is not really batting at or looking at the toys that are hooked to her car seat. She is looking at us and tracking us across the room, but she doesnt seem interested in toys. However, she is already putting her whole weight on her feet and locking her news like she wants to stand! 

Should I worried about the lack of interest in toys etc?