M.G.
I have a relative who helps kids like this - she's on the pediatrics team, a pediatrics dietician. She helps kids your child's age and even much older with picky eating and texture aversion, etc. She helped a little on who would choke on a cheerio and she was well past 2 years. They know which foods to offer, how to prepare and in what order - so just wanted to mention that in case it continues.
The sugar is probably to help kids put weight on (Pediasure). I had to take a supplement once and it was full of sugar, but that was the point. I was ill and lost weight. As well they have all the nutrients of course.
Good luck :) If I talk to her I will update my post in case she knows of something else to try