My little girl just turned 5 Months yesterday....she rolled over at about 4 months and one week....she did it 3 days in a row consecutively (back to tummy).  Then hasn't done it since.  She scoots all over, lifts legs up and rolls to both sides and will almost roll over, stop herself and roll back.  I'm soooo confused!!  She hated tummy time so I thought that may be why, i put her on her tummy SO much more, now she likes it and even falls asleep....I'm like nooooooo!  Did she regress?  Does she just choose not to.  So worried!!