Cheryl,
Very often a baby with tongue-tie will appear to nurse quite well. The mom's
breast will soften, and she will see sufficient output.  However, you have a
couple of tell-tale signs here that this baby needs to have his frenulum
cut.
1. He nurses all the time and doesn't seem satisified
2. He is not gaining weight
Even though there is good milk transfer, it is most probable that the only
milk this baby is receiving is foremilk.  He probably does not have the
ability to strip the sinuses and elicit the ejection of hindmilk.
In this case, the milk transfer is not the result of a complete peristalsis
of the tongue, but rather of a partial peristalsis and of succion.
If the ped will clip the frenulum, you will see an immediate change.
Best of luck,

Glenni Lorick, BSE, IBCLC
Lima, Peru
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