It's hard not to 'compare', especially when you don't know what 'normal' is (ie. if this is your first bub, etc.). I think the thing to remember is that all babies are different. I've noticed that many babies developed in certain ways, eg. some develop very well vocally but don't "move" much until later on, whereas my Charlie is a crawling, walking, moving maniac but hasn't said anything yet! (I don't know which I would prefer... :-s ) The first few months are such a period of change, so don't stress too much about anything like that. If you're really concerned, speak to your GP - always follow your gut instinct and get things checked if you feel that bub needs it - but otherwise relax and enjoy the journey. Sounds like you're doing a great job.