He tried to force it away, but his steps were already slowing.

His steps slowed and he went forward with more caution.

As they approached the end of the room their steps slowed.

This gives you time to take steps to slow the damage to your lungs.

Then his step slowed until she caught him up.

As the distance between them closed, Jason's steps slowed, then stopped.

It was peaceful, and their steps slowed as if to draw out the distance to the car.

She tried to continue; but her steps slowed of their own volition.

She turned to walk around it, and almost imperceptibly her steps slowed.

The other person's steps slowed the closer they got to the intersection of the halls.