There is also a chance that he can not latch onto your breast properly, preventing him from drinking hind milk rich in calories, which is expressed at the end of each session. (newkidscenter.com)
If a breastfeeding baby is unable to latch onto the breast properly, the breast will not receive the proper stimulation to continue making milk at a normal rate. (myorganicformula.com)
A baby with a tongue - tie can't extend his tongue very far out of his mouth, so it can affect his ability to latch onto your breast correctly. (verywellfamily.com)