I only just saw this, but for anyone out there who may look back on this - You CAN overfeed a FF baby... but not in the way we would normally think. I only know this, because I did it when DS was little and was giving him tummy aches. The amount of formula you give your bub isnt the issue, the problem is feeding them too often.

When DS was a newborn, we were giving him 10-12 bottles a day - TOO MANY! Now I look at that and cringe, but no one told us otherwise! I think the standard they recommend is 6-8 bottles in a 24 period. The quantity within each bottle? As much as your baby wants...

I hope it's all worked out for you now.