If you're saying you can't inhibit double rotation (as opposed to the natural type of longer and slower rotation that pianists really use) you should urgently learn some alternatives. I suspect you're actually talking of something more natural, but the specific idea of double rotation is nowhere at speed and would be an extremely odd thing for anyone to be unable to inhibit in slow speeds, unless they've been programmed to the point of limitation by the Taubman cult.
Two examples- pick a series of ascending r.h. notes. Lean towards the thumb (so the fifth is right up over the top of it) and progressively lean back towards the fifth as you play through. Note that you will now be leaning AWAY from the thumb as it plays and not rotating down into it. And there is no reversal as per double rotation, but instead one continuous movement down into each finger. Secondly lean towards the fifth in advance, so it's on its side. This time time lean slowly towards the thumb as you rotate through the series (still the same ascending notes!). This time, the thumb is rotated into while it plays. But the arm continues to rotates slowly in the same direction, thus going AWAY from putting force through the other fingers - making room for them to move from a place of freedom without any enforced burden of weight.
Both options are vital. I use both techniques in things as diverse as the Bach c major Prelude and Chopin's first etude. Getting stuck in one all the time produces bad results without both options- for meaningful and naturally integrated rotation. Not only is double rotation nowhere in either, but each involves an important situation of moving a key while making room for it to do so. Double rotation offers literally no experience of that whatsoever but only teaches how to shove into a finger that is probably very lazy. You'll get horribly bogged down if double rotation is the only tool in your rotation box- especially if you do it with no finger movement like they advise.
The "double rotation" I'm speaking of is not a long, exaggerated motion. Like, I said, it almost seems to be reflex or rather a natural setup, and even playing slow it is quite small, and I'm pretty sure it involves the entire playing mechanism rather than any isolated part because it only works well if everything is coming together.
It's the only possible way you can get Whiteside's idea of a ripped five finger chord to work at all while having clarity and evenness between the notes. There's a simultaneous feeling one gesture (one direction) from the upper arm while at the level of the forearm/hand/fingers multiple gestures that feel very minuscule but there.
In order to get this clarity, there has to be some kind of
lift as you are moving in the same direction (C->D->E->F->G) the split second right before you hit the next note. The two extremes options are pure rotation from the forearm or extension of the fingers, neither will work in isolation if you want the combination of high speed and comfort as well as clarity. In fact, instead of thinking just a double rotation, maybe it should be called preparatory action that involves double rotation and finger extension (at least at the IP joints).
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The rotary work is best sensed through the the sensation of arm weight. I use the sensation of arm weight to shift the balance in the structure from hand as I move from finger to finger. As you balance or shift your weight on each finger, there is a very minuscule rotation that is involved in the preparation of the next finger, but you don't actually think about causing that rotation, it just happens.
To put it in another way:
LH on CDEFG, starting from a position where all fingers are in contact with the keyboard. Let's say we are going from the 4/D to the 3/E after having played 5/C.
So basically there's the obvious rotation in the direction of the note progression that no one denies. As you play the 4/D, the moment you make contact with the key and depress it, your shift in hand balance toward the played finger creates a tiny rotation toward the direction of the shift in balance/the note just played BUT opposite the direction the notes are progressing (C->G).
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Now for the finger extension. You can use the misguided Hanon approach of lifting the fingers high while keeping the wrist still, but by now we all know that leads to injury if you overuse this motion. However there is a way we can use extension to help out in this preparatory action. You don't actually want to use full finger extension to lift the fingers, you just want extension from the IP joints.
Luckily there are muscles in the hand that allows this type of action: the lumbricals (as well as the interossei which are probably more involved with the MP flexion portion while the lumbricals the IP extension). They simultaneously cause flexion at the MP joint while extending at the IP joints. You basically, want to use the lumbricals as if you were grasping, coordinating their use together.
As you play the 4/D via the lumbricals, the flexion action makes that finger go down at the MP joint, but you also have the simultaneous extension from the IP joints that maintain the structure of your hand/fingers as you play, prevent curling. This simultaneous flexion/extension allows you to think "up" while simultaneously playing down because your phalanges are going down via extension to play while maintaining a dynamic arch structure with the metacarpals through flexion that helps you think "up" allowing you to avoid keybedding without actually stopping yourself (at least directly).
But because you are using all your lumbricals together, it also works on the other fingers. As you play the previous note, it prepares the next note due to the lifting action by the extension at the IP joints at the next finger, but again this doesn't work very well by itself without the aid in setup via rotation that is accomplished through weight/balance transferal.
(There also seems to be a slight axial rotary at the MP joint itself which would involve the fingers. It is most present when you are grasping a large, round object, which requires the simultaneous flexion at the MP, extension at the IP joints, and abbduction. It might be minuscule, but I can see how it can enhance the forearm rotation component if everything is aligned.)