Tanya- no i dont think you can hurt him wrapping. DH was concerned i was hurting him wrapping so tightly to but it really seems to make a difference with his night sleep.
When in syd i got my BIL to wrap him one night, he looked like a little cocoon it was very firm! but he slept great that night. last night Nixon slept from midnight - 8.30am and i think a good wrap had something to do with it. BUt Nixon is going on 3 months old so is starting to sleep better/longer during the night.

Ive just taken him to the MCHN.
He weighed 3990g ( only up 310g in 3 weeks) (if he didnt do a huge spew in the car on the way there maybe he would have hit 4kg!
Head was 37cm (up 1cm in 3 weeks)
Length 55cm (up 2cm in 3 weeks)

so i am a bit dissapointed that he has not put on more, each time we go his growth seems to slow down. I know its because he chucks so much, so Im going to start trying to top him up when he has a bad chucking episode. I feel like a bad mother because i want my own time or enough time to get things done between his feeds rather then be topping him up again and again and just feeding all day long.