another thought: is thickening even necessary?
it is mainly used when baby isn’t gaining weight and really for when there is aspiration when swallowing. the way to know HOW baby is swallowing, the mechanics of it, etc, is by what is called a Swallow Study. after the Swallow Study you would then be told what thickness of ST your baby needs…
it is not entirely proven that thickening helps reflux, although if you read through this board, many have sworn that their babies have benefitted from it!