How do I take off the steering column from the shaft?

Looseness in the steering column is typically not resolvable by tightening any bolts.

To 'properly' tighten the 4 bolts in the column tilt assembly you are referring to - takes special tools to remove the 'mass jacket' from the column .. Column itself does not need to be removed .. Highly recommend seeking out personnel that's more familiar with this repair for hands-on help.