Rolling over and tummy time

During some of her alert times, I've been trying to give Bree a bit of tummy time. She seems to tolerate it for a few minutes before becoming cranky. Of course, if she's a bit tired she will just fall asleep in the tummy time position. She seems to be doing great with tummy time and can now hold her head up, turn it from side to side, and roll over if placed on her belly. Bree's been pretty active since birth. Right after delivery, Bree rolled onto her side when the nurse placed her on the baby scale. She managed to roll over within a week or two of birth both from her tummy to her back and her back to her tummy. At 6 weeks of age, she finally let me capture her ability to roll over on video!! Yay...here she is! The first attempt is not successful, but the second attempt was.