Help me have more consistent super-o’s?

So I’ll preface by saying I’ve been using aneros toys for over a decade now, but only within the past year or two have I fully dedicated myself to attaining the super-o. My problem is this, I have managed to achieve this goal on but a few scant occasions and they were quite intense, yet fleeting. Never have I been able to make them last more than maybe 30 seconds before the intensity wanes back to a plateau, also I’ve been unable to string together more than one or two at most. Typically, after the intensity fades I try to relax everything and find the path again, however more often than not, being more focused on staying relaxed ends up bringing me to an HFWO, which pretty much kills the session. I’m not really sure what I’ve done differently to get the few supers I’ve had, I just know that 4/5 times I do my thing I end up having to change the sheets. Any advice?