out from the covers

Out from the covers what do I see, two little eyes staring at me, they should be sleeping but they'd rather be in here making memories for us to keep. With a rock a bye lullaby, oh baby oh, with a rock a bye lullaby quickly they'll grow, things less important we'll just have to keep, with a rock a bye lullaby my baby to sleep.

My mom used to sing this to me when I was a baby and would love to find the song! Any leads would be much appreciated.