DS is nearly 15mths and has always slept in our room in his cot due to lack of space. We r now creating some room in our box room and thinking of the best ways to move him in there. He's at that age where he knows which room he sleeps in and I am thinking if we dont do it soon he is never going to move. It has been handy having him in with us especially when he wakes up. ANY TIPS?