My little girl is 12 weeks old, but was born at 35+6 so I would expect her to be along the lines of an 8 week old. She still struggles to hold up her head, and can only do it for 3 or 4 seconds at a time when on her tummy. She is smiling but it's difficult to get two or three from her each day. She only really has one cry, and I read that by now I should be able to tell if she is crying because she's hungry, wants a nappy change etc. She isn't very interested in toys at all and doesn't really look when I try to show her them. She does watch me however and will follow me around a room with her eyes. Am I expecting too much of her or should I be concerned?