Read the section about turning eggs in Hatching Eggs 101 by @Sally SunshineWe aren't exactly scientific with our turning. We just attempt to roll it gently 180ish each time every 8 hours. We also have three batches all on the same schedule so we make sure to do them all the same. Once they get to one side of the pan we reverse and they roll back the other way to the other side. Prob takes about 6 rotations to get all the way from side to side.
It explains why you need to turn the eggs in the opposite direction on alternate rotations when you turn it rather than always turning it in the same direction.