Before her due date, I just tried to keep it dark and warm. I sang and read quietly. She needed to be propped due to reflux, so I'd put in her the boppy, or the vibrating chair that is technically a "bouncer" right away. We did not have a swing, but if it was soothing and made her happy, I would have used it right away. We used the rock n play and rocked her right away. They use a mamaroo in the NICU. I started reading to her around her due date and showed her the pictures, which she enjoyed. I dangled toys, but she was not that into them...it didn't seem to stress her out tho. It was probably around 4-5 months (2-3 adjusted) that she reached for toys and before that she would watch them. Hiccups are an indication that it is over-stimulating.
Re: Suggestions?