R., I'm a 70 year old grandmother with 50 years of parenting behind me. I raised three children and I raised one granddaughter. It is not unusaual that a new infant has trouble transitioning from awake to sleep. Especially these days when we are instructed to put babies on their backs, this position tends to make babies a bit "nervous" because it's like being in open space. My suggestion is to wrap the baby very securely in a receiving blanket and place her on her side with a bolsted behind her back adn place her close to the top of the crib across the headboard. Make her space as small as possible.. it will give her a more se4cure feeling. Soothing her to sleep is not unhealthy, she is a very NEW little person..
She is not used to the big world.. holding her and rocking with her until she falls asleep is ok.. wait until she is deep in sleep befoe placing her in her bassinett. Keep her inthe bassinette until she is quite a bit older or she outgrows it. The smaller the space the more security.. Also switch which side you put her on each time she goes down for her nap.. Make her nap time a ritual.. diaper change,wrap her up, feed her, soothing music, rocking and sleep. Before you know it this time will practically fade from yu memory until you have to stop and think about it with baby #2
Nana J.