i put on 20kgs with DS, was all gone in about 6 weeks, he was a 9 pounder too
this time ive put on 8kgs so far but i lost 8kg from 4-14 weeks being so sick, so i lost 8kgs in 10 weeks then put on 8 kgs in 10 weeks lol! hoping to only put on about 7-8 more but u do lose it pretty quick so im not toooo worried lol