Try this drill to give you the feel of NO WRISTS when you putt
The best putting strokes are where the arms and hands are passive in the stroke and the shoulders do the work using a pendulum type of stroke.
This is the best technique for good distance judgement as well as accurate shorter putting.
If you tend to be wristy try placing a golf club under your armpits.
It is a bit awkward and uncomfortable but give it a try.
Now simulate your putting stroke with your putter and feel how it isolates your shoulders and allows the hands to sit passively on the putter.
This is how a good putting stroke should feel, all shoulders and next to no wrists.
Try it at home on the carpet.