My baby is almost 5 weeks old. The only way she will fall asleep is if I hold her or in her swing. She will usually go down easily during the day in her nest on the sofa (supervised only). Last night she would not stay asleep when I placed her in her cot, as soon as she's put down she's wide awake and fussing. Is there an easier way of transitioning her from my arms to the cot and getting her to stay asleep?