The part where he said he stands by his original projections, which he projected would happen if nothing were done and still believes would happen if nothing were done?

The original report said action was necessary to avoid drastic consequences. Action was taken and is being taken. Now he says that action might avoid drastic consequences.

That simply is not “walking back” anything. If anything it affirms what was said before. What we are doing to stop the spread of the virus is critical. That message is consistent.