When it comes to sleeping, a baby who learns to self - soothe can use techniques such as sucking on fingers or toes to calm himself down until he is asleep. (romper.com)
While sucking on her fingers can be a soothing, your baby may be at risk for some possible health conditions. (lovingmomentsbras.com)
Babies may self - soothe by sucking on the fingers, rocking back and forth, or making sounds. (modernmom.com)