This may not be the answer you want but the truth is we can’t know.
Some people claim it helps them, some claim it does nothing.
A similar question was asked once and this was my answer:
I remember I made a sleep programming audio when I was getting my driving license. It worked wonders…but it led me to a lot of insecurity. I was choosing the right answers, I got my license at the first test.
But I was “guessing” the answers or intuiting them, so I didn’t feel sure ever. Simply cause I didn’t study the material enough. Otherwise, I’d have felt sure of my answers.
Also the subconscious can be quite literal sometimes. I did get my driving license, with the max amount of mistakes allowed.
Subconscious limits remover, ego dissolution, superhuman genius, are good choices to listen to before studying or even listening to your material. Brain dancer and alchemical revision of genius to listen to regularly. Brain regeneration too, before/while sleeping.
Will power, gamma waves (may be the best to listen to while studying), and brain refresher (goodbye pomodoro alarms) help while actively studying. Attention and focus helps if you listen to before.
After waking up the best thing to listen to is the material you listened to while sleeping. Also, I’d make the audios 4 hours or so…I wouldn’t sleep all night with it. That can lead to less sleep and hence less retention.
Something I’d do is to listen to brain dancer a bit before studying, and then after waking up (it stimulates all memory areas of the brain, but in this case, it can also act as an anchor…but the point is to recall what you learned as soon as possible).
I also got this advice when asking for something similar:
Good luck.