Sleep aid along with method incorporating same

An infant sleep aid for use in reducing a risk of plagiocephaly, comprising:

• a. a cushion for placement on a support surface, including:
• i. an elongate pad having a selected configuration which is sized and adapted to accommodate an infant when placed thereon in a reposed position such that the infant extends along a longitudinal axis of the pad;
• and
• ii. a casing surrounding said pad, said casing having a bottom panel for confronting the support surface and a top panel providing a support surface for the infant when placed thereon, said top panel having a head portion;
• and
• b. a sleep position indicator slideably supported by said cushion and having an elongate dimension that is greater than a width of said head portion, a medial portion of said sleep position indicator adapted to move transversely to said longitudinal axis within a slideway between a first position wherein a first end portion of said sleep position indicator visibly protrudes from a first side of said cushion to inform a first head orientation for the infant, and a second position wherein second end portion of said sleep position indicator visibly protrudes from a second side of said cushion to inform a second head orientation for the infant.