"Sid" is a shortened version of the word "aside," which means to move or set something to the side or away from the main focus. It can also refer to stepping away from a situation or diverting attention elsewhere. Full definition
When babies are breastfed and co-sleep, they have the lowest rate of SIDS of any other category. (thestir.cafemom.com)
Maternal - infant bedsharing: Risk factors for bedsharing in a population - based survey of new mothers and implications for SIDS risk reduction. (verywellfamily.com)
The campaign has been credited with a 50 percent reduction in the number of deaths from SIDS from about 5,000 infants each year to fewer than 2,500. (abcnews.go.com)