Saving as many lives as we can, even when we can't save them all. That is the hope behind efforts like the 20-week ban, the heartbeat bill, etc.
These efforts are attempts to climb back up a slippery slope that ultimately leads, at the bottom, to a devaluing of all human life. Our culture has been sliding down that slope, and the attempt is being made to slowly but surely make our way back up it.
But even if we outlaw abortion completely, that doesn’t get us off the slope.