Feeding Aversion

I've posted on here about this before.  And after hours of frustration and trying to get him to eat, I think it's definitely a feeding aversion. Which at least means he hasn't regressed nuerologically.

I tried almost every toy we own to distract him, doesn't work.  Until apparently I foudn THE magic one.  The "Good Night Scout" Book.  It reads when you turn the pages.  He ate an entire container of yogurt while I "read" the book with him.

As soon as the book stops reading he refuses to open his mouth. 

I think between him being sick so much and his daily two to sometimes three doses of medication he just associates everything coming to his mouth as medicine. 

So now...any tips for breaking the association?  or just pick my battles and keep playing the Scout book?

I'm just so relieved he'll finally eat something.