Baby crossing ankles?

I recently noticed that when I carry my 4 month old from a lying down position, her legs either stiffen or her feet (sometimes one or sometimes both) turn inwards (almost like she is about to clap her feet) or sometimes crosses her feet at the ankles. like they aren’t floppy straight legs when I’m lifting her

Also she rubs her feet against eachother and ends up crossing them then too (only briefly)

Do any of ur babies do that?

Google scares me with talks of cerebral palsy 😱