I used a fleece pocket sling from Kangaroo Korner. I did the tummy-to-tummy position with the babe's feet tucked underneath. Both my premies were happy in that position for at least 2-3 months. I moved the fabric of the carrier so that there was a lot of fabric against my body and less on the outer layer so my baby's face wouldn't be covered. The instructions that came with the carrier were very helpful in that regard.