Listening to fewer subliminals will provide quicker, concentrated, more noticeable results ye definitely.
Not getting results could have many reasons.
First it could be a bogus or poorly made subliminal. Check the source.
It could be that if your playing ultrasonics your having equipment issues.
Also you may be in data receiving mode. If you stop listening for a week you would go into data execution mode. your mind would start pushing you in the direction of the subliminal and you would notice results of that was the case.
Or somewhere after you started listening to a particular sub you started getting results, but then you started going against the subliminal by not taking action. When that happens your subconscious will block the subliminal out because it got the message that your not approving it. In this case you would take a break say a week or two then go back to listening and this Time taking total action.
Or you may not be noticing results because it has been designed in a way that makes you not notice the changes ( an attempt to bypass the resistance to changing, which i don’t think they do that here at sub club). In this case others would notice the change depending on the type of subliminal.
Also I’ve noticed personally that listening to subliminals whilst in a theta brainwave state (hypnosis) significantly increases results speed. That’s my way of listening actually.
These are just some of the reasons. Many more.
Also don’t wait for the subliminal to make all the changes for you. Start transforming your life now consciously and your subconscious will follow. Take care