Once you understand the fundamentals of the putting stroke you will recognize that it is a very natural movement. Thereafter let your body take over and don’t allow your mind to interfere. This is one of the most difficult parts of putting, but it is just like walking. Let it happen.
I read somewhere… to see it, feel it, trust it, and what you said is it’s now time to get the thoughts gone and just do it. I’ve used more than a few of your putting advise and just wish I had did it 18 years ago!