Our girl is making huge strides these days. One of them is learning to roll from her back to her tummy. I put her on a ramp I made and help her by giving her something to follow with her eyes and over she goes! At this point she need help from gravity but yesterday I was able to lower the incline by about 6 inches and she was able to do it! Eventually, we will get down to the flat floor and she’ll be officially mobile as she already rolls from tummy to back. She just loves rolling down her ramp!