HFWO preventing me from having a super O?

So usually what happens in my sessions is after having the aneros inserted for a while I start to get feelings of pleasure. Once this happens, usually without me doing it purposely, lots of movements from my body occur to try and achieve an orgasm until I eventually have a really intense orgasm with ejaculation (sometimes dry o but after a dry o usually comes another HFWO) which ruins the session as I no longer want to keep going. These movements are usually my back arching, me pushing my hands into my legs in an upward motion and moving my legs closer together with some pelvic movement also. All of these always lead to a wet orgasm. I feel like this is getting in the way of me achieving a super O. I know i shouldn't do these movements because they always lead to a wet orgasm but i cant help it. The feelings are so intense and that drive to achieve an orgasm is so strong that my body does whatever it can to get there almost involuntarily. I've tried to stop this tensing up and moving towards a ejaculatory orgasm but when I do so I feel almost nothing. The intense pleasure goes away and I end up just laying there unless I once again engage in the movements. I'm not sure where to go from here or what to do. I feel like my body is constantly trying to work towards a really intense ejaculatory orgasm and this isn't what I want. I am trying to achieve a super o with no ejaculation so that I can keep going. Not sure what I'm asking for. Has anyone else had this problem and what can I do to fix it?