By skin-to-skin contact
(handshakes or hugs).
By touching a contaminated surface (blanket or doorknob).
Some psychotropic medications can result in lucid dreams, it has also been proposed that some forms of fungi can enhance ones capacity to be able to interact with dreams but this is incredibly dangerous in practice. Usually attaining a healthy amount of sleep (8hrs a night) as well as being aroused before you adequately release from NREM sleep, can help you recall a dream.
The parents would have to report what good place could study overnight and see how bad the sleep apnea is and if necessary to get checked and see if the mother have been doing things during her pregnancy with the infant causing that to happen