DD is 7 months old and exclusively bf since 3 months. Recently I've noticed during her night feed (anywhere between 12 midnight - 5am) my letdown reflex is a lot slower. She is getting frustrated and so am I (but trying not to stress). Is this a weaning thing? It even happens when her last feed is 6pm and she's gone through to 5am and my boobs are explodingly full and she's sucking like crazy. What can I do to get it back to normal? The days are fine still.