Yeah!!! Ours does circles all around. It started in his bassinet lol when we transferred him to his crib since it’s a circular crib he does much better. I still check on him throughout the night, but only move him if he ends up near the edges.
Yes my 5mo does this and has for awhile now we roll up a blanket or towel and tuck in edge of top of crib just in case.
5 month old does this too. She scoots her knees up into her chest with her butt in the air. Then propels herself forward with pushing off her legs. She does it awake and asleep.