My 7 month old was a great sleeper until 5.2 months then waking 3 times per night and only settling with a bottle.-last few nights was waking every hour (-my tether is not as long as some of yours!!) I was getting worried about how much milk she was drinking - and tired of the wet-through bed sheets - she woke and I just gave her the dummy. it has settled her it seems. is this wise??