We need advice on getting our 8 week old to sleep in her bassinet. She has been sleeping in the sleeper that came on her Graco PNP since she was born but has refused to sleep in it the last couple nights. We put her to sleep and either immediately or within minutes she is back awake after laying her down. We have even tried heating it up with a heating pad before laying her down thinking that maybe it was cold but that isn't working either. She has went from sleeping 4-5 hours stretches to barely making it 2 hours no matter where we try to get her to sleep. The last couple nights we have had to get her to sleep in her swing for a couple hours and then put her in bed with us. We are really trying not to co-sleep and looking for any advice. There are a number of products that are supposed to help infants sleep in their cribs and bassinets and we are overwhelmed trying to figure out what might work so any advice would be very appreciated.