Nursing constantly

My baby is almost 2 month old and he wants to nurse constantly. He’s always liked to nurse alot but it’s gotten worse. He has gained plenty of weight (almost doubled his birth weight). I tried giving him a pacifier but he hates it. I produce plenty of milk. Any advice? Tips? Anything? I’ve been exclusively breastfeeding and would like to continue. At night he wants to nurse for hours. It hurts so bad. Please any advice.