This sounds silly but can babies start smiling more gradually? My baby aged 7 weeks has just started smiling but rarely seems to do it despite my attempts to entertain him. This coupled with his behaviour (seems irritable alot) makes me wonder if I have just got one with a bit of a grumpy personality. I am probably being completely paranoid but other babies at the group i take him to always look more chilled out and calmer than he is. Please tell me it is all in my head. Will he smile more or is this it?