I've started to give Meredith "tummy time" and as long as it's a couple of hours after her bottle, she does pretty well.
I am totally surprised at how much she tries to pull her legs up under her. I don't really remember Mackenzie doing that too much, but then again it was 3 years ago, so she might have done the same thing and I just don't remember.
With all of Meredith's squirming around, she manages to rotate on the blanket. I went in the other room to talk with Mackenzie the other day and when I came back 2 minutes later she had rotated about 45 degrees.