I have an 11 week old baby girl. I used to be able to rock her to sleep or drowsy. I also use white noise and have the room dark. Recently, it has gotten harder and harder to get her to nap. Now I cannot soothe her to sleep at all and have to resort to the dummy. How do I soothe her to sleep without the dummy? She is beginning to suck her hands but, when I leave her, she just cries. She doesn’t feed to sleep either.Any tips?