Can anyone explain if the physical attacks/temptations that happen when I am asleep (e.g., demons beating me and choking me when I am going off to sleep, especially after the rosary) could it be from committing sin. These visions are extremely violent, they are vile and disgusting, and they don’t scare me anymore; but I wondered if this is normal.
You cannot commit sin in your sleep because in sleep you do not have the free will necessary to commit sin. You need not worry that you have sinned because of dreams. From your description of your dreams however, I suggest talking to your pastor as soon as possible. Ask him to recommend a specialist in your diocese who is trained to help you discern what is happening to you. God bless.