Thanks for the replies, sounds like I am on the right track. DD is used to sharing with her grandparents when they come to stay (my mum comes for extended periods 8 weeks or so sometimes) and likes that, and seems excited by prospect of sharing with DS. If it doesn't work he can come back in with us and try again when he is older, have not found having his cot in our room as much of an issue as thought I would. For those that share have they been doing day naps together? DD does not always have hers, but currently DS and I tend to nap when she does on my bed (sometimes she likes hers in his cot) but as he is rolling now and I don't always want to nap with him will start putting in cot, which will then be in her/their room.