Ds is 9wks today. All well and coping with having two. The struggle I am having is dd-3 is being kept to her 7pm bed but can't get ds to settle on cot and heblikes to co sleep on the boob. Want to get him to go down in cot at least for first part of night but think he will cry and this wakes dd. Swaddling worked for day or two but no more and now spits dummy out that gave him. Any tips?