If your let-down is forceful, you'll know immediately as the milk won't flow naturally. Both you can your baby will struggle during this. As your baby tries to feed, they'll become fussy, moan, tug at your breast, and so on.  If the milk flow is too much for them, they'll start choking or pulling away, coughing or gasping. It's essential to take note of your surroundings and how your baby is reacting to your feed.