Growing boy

We took Collin in for his two month appointment yesterday.  I was very surprised to see that he weighs 9lb 3oz!  He was 6lb 9oz at his two week appointment.  I thought that gaining 2 and a half pounds was amazing....until I looked at Scotty and Grant's two month appointment weight and saw that Grant gained 5 pounds from 2 weeks to 2 months!  He was 12lb at 2 months- a big boy for sure!  Collin is at the bottom of the charts in the 5-10 percentile for weight, height and head but he is proportionate and growing steadily.  We discussed his spitting up problem.  He spits up all the time.  All day long.  Right after a feeding.  A long time after a feeding- it doesn't matter, he just spits up all the time.  She told me to cut out dairy from my diet to see if that helps him with the spitting up, runny poo and tons of gas.  Normally that would be no problem for me since I'm not a big dairy fan.  But, of course, I have been digging ham and cheese sandwiches lately and Miles just bought me a big box of Drumstick ice cream cones for Mother's Day!  That's my luck.  But if it helps him to stop spitting up all day long I will be very happy to watch everyone else eat all my Drumsticks!