A "nursing session" typically refers to the act of breastfeeding a baby. It is the time when a mother feeds her baby with milk from her breasts. Full definition
However, as my pregnancy progressed, I decided that I wanted / needed to cut down on the number of nursing sessions per day for a variety of reasons. (crunchydomesticgoddess.com)
My baby is 4 weeks old and I started pumping after nursing sessions. (exclusivepumping.com)
From a catch all cloth used during nursing sessions to a bath time wash cloth, the softness of the material is gentle against mine and baby's skin. (fairhavenhealth.com)