Advice

I’m a guy in my early 20s and pretty new to the aneros and currently have the helix Syn trident and progasm. I get good feelings for the first few minutes in my session and then everything seems to end from there. I get up to a point where my legs will start to shake like crazy and my dick will be hard but I really don’t get any feelings. Usually I jerk and cum at the end of my sessions which feel so much better and I know a lot of guys do to it end. I was just looking for advice and if anyone could help me reach the super o. Please feel free to dm me