baby can sleep for hours in my arms but only 40 mins - 1 hour tops in cot. He has a comfort blanket/muslin and sometimes dummy for daytime naps. Once he spits out dummy he usually wakes to ask for it to be put back in so I have to wait by cot for entire nap incase it falls out! then he usually wakes after 40 mins and doesn't re settle. I've tried leaving him and I've tried sshhing him, any ideas? or should I just accept he likes little naps?