I think for us - especially as first-timers - it's hard to know. I'm nearly positive y'all are right and the ped is wrong, but I'm also happy that he wanted us to follow up so quickly, and not let the supplementing linger. We're going to see an IBCLC at an open clinic on Monday, I believe, and I hope, hope, hope that will help.
It's so hard to know what's right, and everyone has different advice. Ultimately, we want what's best for our son - and his behavior was worrying us greatly. I'm sure this too shall pass - quickly!