I recommend subliminals to a lot of people.
I HAVE NEVER MET A NEW SUBLIMINAL USER THAT NEEDS MORE THAN 5 MINUTES OF EXPOSURE TO START.
I always tell them listen to 3-5 minutes, and to not increase or decrease until they can feel any positive/negative effects.
They can always feel subs after 2-3 weeks, maximum. Usually within the first week. And once they can feel the effect they either stay at 3 min and feel great success long term
OR
They drop down to 1 minute
It’s amazing how they have no preconceived beliefs except that 3-5 minutes is enough, because that’s the frame I set, so that’s what becomes true for them, and then for other people who have other beliefs they worry that 15m isn’t enough because of some other product/modality