I had an IUGR baby too! Everyone warned me about her burning calories, they were terrified that she wouldn't gain weight. i couldn't get anything at the pump, so i put her to the breast every hour. i had to supplement in the beginning but after a few days i only gave the bottle if she was really fussy. She was sleepy but was a natural at nursing by about two weeks old. I splurged on a baby scale from babies r s, not super accurate but at least it assured me that she was gaining.
I guess what i'm saying is, he'll get the hang of it! Its a bit harder for the little babies- but i don't think trying the breast more often and eliminating a bottle or two will be too problematic if you keep an eye on his diapers.
best of luck!!
new mom to yael justine, born 12/20/07 4lbs 7oz
cloth diapers all the way!