Everyone can practice 4-footers at home. I hope you do.
But the other putts we need to practice, the long ones, we can’t practice unless we get to the range.
I found a way to practice them, in part, at home. You can’t practice distance control, but you can practice directional control.
First, you need a “hole” to aim at. The rubber grippers sold in grocery stores make a perfect one.
Stand about eight feet from the rubber hole, with a backstop behind it about three inches high.
Hit the ball as you would a 40-foot putt, say. Watch the ball. It should roll over the dead center of the rubber hole.
The longer stroke an approach putt requires can get your stroke out of whack directionally. This is one way to get good at not letting that happen.