For the last week or so my 21 week old has been refusing to sleep except for on me (or her grandad)she wakes up as soon as she's put down and cries. Stops and goes back asleep when I pick her up.I think it might be to do with her cough/cold so am considering buying this. Anyone used one or heard of any safety issues? Any other suggestions? Have tried dummy and bottle ( so daddy can do some feeds), she rejects these, as a Boob lover she ain't accepting any cheap imposter.