Baby’s eyes rolling forward??

I was changing my 2 month old baby’s diaper when she suddenly rolled her eyes forward/down (rather than back into her head). And that freaked me out, then i thought maybe she was looking at the light by her feet.

Put her down in her bassinet and she did it again! And then she kept doing it on and off. I moved my finger down her line of sight and she did it so I know it’s mostly purposely but then she would just be staring at me and does it again. But otherwise she seems fine. But now I’m freaking out...is this normal? I’ve heard of crossing eyes being normal but not rolling eyes forward. Plz someone give me reassurance if they’ve experienced that with their babies.