Rolling Over

Henry started rolling to his side yesterday when on his tummy.  Today, he rolled from his back to his tummy!  He would roll to his side and then try to get a toy.  It took him several attempts of rolling almost onto his tummy but then falling back onto his back because his arm would get in the way.  But, once he figured it out he was on a roll!! He kept rolling from his back to his tummy.  He is not consistently rolling from his tummy to his back yet.