Remember.. it's all a learning process for them.
First, make sure the room environment is conducive for sleep-- dark and no stimulation.
When you lie her down, if she is drowsy, give her time to settle to sleep on her own. For many babies, it can take up to 20 mins. Some will chat away, others will just stare. Give her a chance to find her way to settle to sleep. If she starts to fuss and get upset, and appears she needs support, then go in and help her.
I know it's overwhelming and anxiety ridden.. I've been there. But give her the opportunity to self-settle. It's all apart of learning. :wink: