My 7 week old has recently begun waking up within 30 minutes of being placed in the bassinet and it is getting exhausting. Before last week she would sleep for several hours in it at a time. I'm not sure what changed but open to any advice. I have done most of what I've seen online to do (even wearing the sheet for most of the day to get my smell on it). It also seems that 7 week olds are too young to sleep train and self soothe so i have not done any of that. Has anyone else experienced this? What worked for you?