In practice, the problem you run into, even with intrinsically motivated learners, is that they will not use the active learning techniques they are studying. Often times they will revert back to rote memorization, highlighting, re-reading, copying notes, cramming, etc rather than use the things they are learning about learning to learn the subject of learning itself.
I think you have to start with:
1) Teaching learning in the first place. No one teaches learning how to learn, so we should just start there. We already have captive audiences in the form of schools, we just put the cart before the horse and teach subjects and hope the skill of learning emerges. This is poor pedagogy.
2) Work with the students and ensure that they are actually using the learning techniques they are being taught on the subject of learning itself. This is the only way I've seen it work.
If you try to learn how to learn using passive learning techniques, you won't learn the subject of learning, which is what I think OP was referring to. People who do not know how to learn use passive learning techniques which results in rapid forgetting. They have to use the active learning techniques they are learning on the subject of learning itself.
Obviously, first you need to learn how to learn how to learn. I believe that this will be the most important skill in the future. Once you have mastered it, you can easily learn how to learn. And then you are ready to learn.
It's incredible how many people try to learn how to learn these days, without spending some time learning how to learn how to learn first. Our education is failing.
Jokes aside I'm really into learning science and make youtube videos covering learning and learning papers + an ipad app. I keep a running list of my favorite learn-to-learn resources here:
https://www.ahmni.app/blog/learn-to-learn-resource-list
If I had to recommend only one resource it would be: The ABCs of How We Learn: 26 Scientifically Proven Approaches, How They Work, and When to Use Them by Schwartz