Pretty sure my baby has gained 2-3 lbs in the last 3-4 weeks. To me, that's not normal. Then again,…

Pretty sure my baby has gained 2-3 lbs in the last 3-4 weeks. To me, that's not normal. Then again, maybe he's finally playing catch up. He has been nursing like a champ very, very frequently, and I know hes hit his growth spurt because hes been keeping me up all hours of the night to nurse as well. He used to sleep 5-6 hours at a time, and now hes waking up every two hours or so. And, he's definitely packing on the chunk. He's 5 months, corrected age 3 months, and I'm pretty sure he's 14-15 lbs right now. What does everyone else's 5 month old weigh?