These are what I researched that helped people the most in terms of subliminals,audios and things like it.
Obviously if you want to boost it and make it faster, you can do spells and evocations to affect subconscious mind.
You can work with lunar energies,god of sleep, death gods, Archangel Gabriel and many other beings to help you with this as well.
I have used all of these and have made a bit of progress in remembering dreams.