My son is 8 weeks old (SWCAH) and seems to be gaining an enormous amount of weight very quickly.  Since he is my first child I was wondering if this is normal or possibly due to the cortef?  He weighed 6lbs. 9 oz. at birth and now weighs 12lbs. 41/2 oz. at 8 weeks.  He has moved from the 10-25th percentile to the 75th percentile on his growth chart!?!?!  His cheeks are very chubby but is this abnormal?  Please help.  Thanks, Lisa